diff --git a/js/bullets.js b/js/bullets.js
index b5bebae..b657e88 100644
--- a/js/bullets.js
+++ b/js/bullets.js
@@ -50,6 +50,8 @@ const b = {
   isModFoamShieldHit: null,
   isModDeathAvoid: null,
   isModDeathAvoidOnCD: null,
+  modWaveSpeedMap: null,
+  modWaveSpeedBody: null,
   modOnHealthChange() { //used with acid mod
     if (b.isModAcidDmg && mech.health > 0.8) {
       game.playerDmgColor = "rgba(0,80,80,0.9)"
@@ -245,9 +247,9 @@ const b = {
       maxCount: 3,
       count: 0,
       allowed() {
-        return mech.fieldUpgrades[mech.fieldMode].name === "nano-scale manufacturing" || b.haveGunCheck("spores") || b.haveGunCheck("drones") || b.haveGunCheck("super balls") || b.haveGunCheck("foam")
+        return mech.fieldUpgrades[mech.fieldMode].name === "nano-scale manufacturing" || b.haveGunCheck("spores") || b.haveGunCheck("drones") || b.haveGunCheck("super balls") || b.haveGunCheck("foam") || b.haveGunCheck("wave beam")
       },
-      requires: "drones, spores, super balls, or foam",
+      requires: "drones, spores, super balls,<br> foam, or wave beam",
       effect() {
         b.isModBulletsLastLonger += 0.33
       },
@@ -770,6 +772,38 @@ const b = {
         b.isModFastSpores = false
       }
     },
+    {
+      name: "ice crystal nucleation",
+      description: "fire <strong>ice crystals</strong> formed from water vapour<br>your <strong>minigun</strong> no longer requires <strong>ammo<strong>",
+      maxCount: 1,
+      count: 0,
+      allowed() {
+        return b.haveGunCheck("minigun")
+      },
+      requires: "minigun",
+      effect() {
+        for (i = 0, len = b.guns.length; i < len; i++) { //find which gun is flak
+          if (b.guns[i].name === "minigun") {
+            b.guns[i].ammoPack = Infinity
+            b.guns[i].recordedAmmo = b.guns[i].ammo
+            b.guns[i].ammo = Infinity
+            game.updateGunHUD();
+            break;
+          }
+        }
+      },
+      remove() {
+        for (i = 0, len = b.guns.length; i < len; i++) { //find which gun is flak
+          if (b.guns[i].name === "minigun") {
+            b.guns[i].ammoPack = b.guns[i].defaultAmmoPack;
+            b.guns[i].ammo = b.guns[i].recordedAmmo
+            game.updateGunHUD();
+            break;
+          }
+        }
+
+      }
+    },
     {
       name: "super duper",
       description: "you fire <strong>+1</strong> additional <strong>super ball</strong>",
@@ -842,6 +876,25 @@ const b = {
         b.isModFoamShieldHit = false;
       }
     },
+    {
+      name: "wave phase velocity",
+      description: "your <strong>wave beam</strong> propagates faster through solids",
+      maxCount: 1,
+      count: 0,
+      allowed() {
+        return b.haveGunCheck("wave beam")
+      },
+      requires: "wave beam",
+      effect() {
+        b.modWaveSpeedMap = 3
+        b.modWaveSpeedBody = 1.9
+      },
+      remove() {
+        b.modWaveSpeedMap = 0.08
+        b.modWaveSpeedBody = 0.25
+      }
+    },
+
     // {
     //   name: "super mines",
     //   description: "mines fire super balls when triggered",
@@ -1681,6 +1734,8 @@ const b = {
       description: "rapidly fire a stream of small <strong>bullets</strong>",
       ammo: 0,
       ammoPack: 55,
+      defaultAmmoPack: 55,
+      recordedAmmo: 0,
       have: false,
       isStarterGun: true,
       fire() {
@@ -1808,59 +1863,77 @@ const b = {
     },
     {
       name: "wave beam", //4
-      description: "emit a <strong>sine wave</strong> of oscillating particles<br>particles propagate through <strong>walls</strong>",
+      description: "emit a <strong>sine wave</strong> of oscillating particles<br>particles <strong>slowly</strong> propagate through <strong>solids</strong>",
       ammo: 0,
-      ammoPack: 65,
+      ammoPack: 100,
       have: false,
       isStarterGun: true,
       fire() {
         const me = bullet.length;
         const dir = mech.angle
+        const SPEED = 10
+        const wiggleMag = mech.crouch ? 4 : 11
         bullet[me] = Bodies.polygon(mech.pos.x + 25 * Math.cos(dir), mech.pos.y + 25 * Math.sin(dir), 7, 5 * b.modBulletSize, {
           angle: dir,
-          cycle: -0.43, //adjust this number until the bullets line up with the cross hairs
-          endCycle: game.cycle + Math.floor(100 * b.isModBulletsLastLonger),
+          cycle: 0,
+          endCycle: game.cycle + Math.floor(120 * b.isModBulletsLastLonger),
           inertia: Infinity,
           frictionAir: 0,
+          slow: 0,
           minDmgSpeed: 0,
           dmg: 0,
           classType: "bullet",
           collisionFilter: {
-            category: cat.bullet,
+            category: 0,
             mask: 0, //cat.mob | cat.mobBullet | cat.mobShield
           },
           onDmg() {},
           onEnd() {},
           do() {
             if (!mech.isBodiesAsleep) {
-              this.cycle++
-              this.force = Vector.mult(Vector.normalise(this.direction), wiggleMag * Math.cos(this.cycle * 0.35)) //wiggle
-              //check if inside a mob
-              const q = Matter.Query.point(mob, this.position)
-              for (let i = 0; i < q.length; i++) {
-                let dmg = b.dmgScale * 0.5
-                q[i].foundPlayer();
-                q[i].damage(dmg);
-                game.drawList.push({ //add dmg to draw queue
-                  x: this.position.x,
-                  y: this.position.y,
-                  radius: Math.log(2 * dmg + 1.1) * 40,
-                  color: 'rgba(0,0,0,0.4)',
-                  time: game.drawTime
-                });
+              let slowCheck = 1;
+              if (Matter.Query.point(map, this.position).length) { //check if inside map
+                slowCheck = b.modWaveSpeedMap
+              } else { //check if inside a body
+                let q = Matter.Query.point(body, this.position)
+                if (q.length) {
+                  slowCheck = b.modWaveSpeedBody
+                  Matter.Body.setPosition(this, Vector.add(this.position, q[0].velocity)) //move with the medium
+                } else { // check if inside a mob
+                  q = Matter.Query.point(mob, this.position)
+                  for (let i = 0; i < q.length; i++) {
+                    slowCheck = 0.3;
+                    Matter.Body.setPosition(this, Vector.add(this.position, q[i].velocity)) //move with the medium
+                    let dmg = b.dmgScale * 0.1
+                    q[i].foundPlayer();
+                    q[i].damage(dmg);
+                    game.drawList.push({ //add dmg to draw queue
+                      x: this.position.x,
+                      y: this.position.y,
+                      radius: Math.log(2 * dmg + 1.1) * 40,
+                      color: 'rgba(0,0,0,0.4)',
+                      time: game.drawTime
+                    });
+                  }
+                }
               }
+              if (slowCheck !== this.slow) { //toggle velocity based on inside and outside status change
+                this.slow = slowCheck
+                Matter.Body.setVelocity(this, Vector.mult(Vector.normalise(this.velocity), SPEED * slowCheck));
+              }
+              this.cycle++
+              const wiggle = Vector.mult(transverse, wiggleMag * Math.cos(this.cycle * 0.35))
+              Matter.Body.setPosition(this, Vector.add(this.position, wiggle))
             }
           }
         });
         World.add(engine.world, bullet[me]); //add bullet to world
         mech.fireCDcycle = mech.cycle + Math.floor(3 * b.modFireRate); // cool down
-        const wiggleMag = bullet[me].mass * ((mech.crouch) ? 0.01 : 0.02) * ((mech.flipLegs === 1) ? 1 : -1)
-        const SPEED = 8;
         Matter.Body.setVelocity(bullet[me], {
           x: SPEED * Math.cos(dir),
           y: SPEED * Math.sin(dir)
         });
-        bullet[me].direction = Vector.perp(bullet[me].velocity)
+        const transverse = Vector.normalise(Vector.perp(bullet[me].velocity))
       }
     },
     {
@@ -1994,7 +2067,7 @@ const b = {
           bullet[me].endCycle = 2 * i + game.cycle + END
           bullet[me].restitution = 0;
           bullet[me].friction = 1;
-          bullet[me].explodeRad = (mech.crouch ? 85 : 60) + (Math.random() - 0.5) * 50;
+          bullet[me].explodeRad = (mech.crouch ? 95 : 70) + (Math.random() - 0.5) * 50;
           bullet[me].onEnd = function () {
             b.explosion(this.position, this.explodeRad); //makes bullet do explosive damage at end
           }
diff --git a/js/index.js b/js/index.js
index dd6f473..ce9d0db 100644
--- a/js/index.js
+++ b/js/index.js
@@ -209,7 +209,7 @@ const build = {
     for (let i = 0; i < bullet.length; ++i) Matter.World.remove(engine.world, bullet[i]);
     bullet = [];
 
-    const increase = Number(document.getElementById("starting-level").value) * game.difficultyMode
+    const increase = Math.min(99, Number(document.getElementById("starting-level").value) * game.difficultyMode)
     level.levelsCleared += increase;
     level.difficultyIncrease(increase) //increase difficulty based on modes
 
diff --git a/js/level.js b/js/level.js
index 815e686..853913d 100644
--- a/js/level.js
+++ b/js/level.js
@@ -13,21 +13,21 @@ const level = {
   levelsCleared: 0,
   start() {
     if (level.levelsCleared === 0) {
-      // level.difficultyIncrease(14)
-      // b.giveGuns("foam")
+      level.difficultyIncrease(5)
+      // b.giveGuns("wave beam")
       // mech.setField("negative mass field")
       // for (let i = 0; i < 9; i++) {
-      // b.giveMod("foam stabilization");
+      // b.giveMod("wave phase velocity");
       // b.giveMod("anthropic principle");
       // b.giveMod("acute stress response");
       // }
 
-      level.intro(); //starting level
+      // level.intro(); //starting level
       // level.testingMap();
       // level.bosses();
       // level.satellite();
       // level.skyscrapers();
-      // level.aerie();
+      level.aerie();
       // level.rooftops();
       // level.warehouse();
       // level.highrise();
@@ -143,7 +143,7 @@ const level = {
     // powerUps.spawn(450, -400, "mod", false, 6);
     // powerUps.spawn(450, -400, "mod", false);
     // spawn.bodyRect(-45, -100, 40, 50);
-    spawn.bomberBoss(800, -450);
+    spawn.springer(800, -450);
     // spawn.cellBoss(400, -750);
 
     // spawn.randomLevelBoss(400, -750)
@@ -889,17 +889,6 @@ const level = {
     spawn.mapRect(2000, -75, 450, 275);
     spawn.bodyRect(2450, 150, 150, 150, 0.4);
     spawn.mapRect(1550, 300, 4600, 200); //ground
-    //floor below right tall tower
-    spawn.bodyRect(3000, 50, 150, 250, 0.9);
-    spawn.bodyRect(4500, -500, 300, 250, 0.7);
-    spawn.bodyRect(3500, -100, 100, 150, 0.7);
-    spawn.bodyRect(4200, -500, 110, 30, 0.7);
-    spawn.bodyRect(3800, -500, 150, 130, 0.7);
-    spawn.bodyRect(4000, 50, 200, 150, 0.9);
-    spawn.bodyRect(4500, 50, 300, 200, 0.9);
-    spawn.bodyRect(4200, -350, 200, 50, 0.9);
-    spawn.bodyRect(4700, -350, 50, 200, 0.9);
-    spawn.bodyRect(4900, -100, 300, 300, 0.7);
     spawn.boost(5350, 275, 2850);
     // spawn.mapRect(6050, -700, 450, 1200);
     spawn.mapRect(6050, -1060, 450, 1560);
@@ -941,8 +930,33 @@ const level = {
     spawn.randomBoss(350, -500, 1)
     spawn.randomBoss(4000, -350, 0.6);
     spawn.randomBoss(2750, -550, 0.1);
-    if (game.difficulty > 2) spawn.suckerBoss(4500, -400);
-
+    if (game.difficulty > 2) {
+      if (Math.random() < 0.3) { // tether ball
+        spawn.tetherBoss(4250, 0)
+        cons[cons.length] = Constraint.create({
+          pointA: {
+            x: 4250,
+            y: -675
+          },
+          bodyB: mob[mob.length - 1],
+          stiffness: 0.00007
+        });
+        if (game.difficulty > 4) spawn.nodeBoss(4250, 0, "spawns", 8, 20, 105); //chance to spawn a ring of exploding mobs around this boss
+      } else {
+        //floor below right tall tower
+        spawn.bodyRect(3000, 50, 150, 250, 0.9);
+        spawn.bodyRect(4500, -500, 300, 250, 0.7);
+        spawn.bodyRect(3500, -100, 100, 150, 0.7);
+        spawn.bodyRect(4200, -500, 110, 30, 0.7);
+        spawn.bodyRect(3800, -500, 150, 130, 0.7);
+        spawn.bodyRect(4000, 50, 200, 150, 0.9);
+        spawn.bodyRect(4500, 50, 300, 200, 0.9);
+        spawn.bodyRect(4200, -350, 200, 50, 0.9);
+        spawn.bodyRect(4700, -350, 50, 200, 0.9);
+        spawn.bodyRect(4900, -100, 300, 300, 0.7);
+        spawn.suckerBoss(4500, -400);
+      }
+    }
     //add mini boss, giant hopper?   or a black hole that spawns hoppers?
   },
   skyscrapers() {
@@ -1599,7 +1613,7 @@ const level = {
     spawn.randomBoss(4150, -1000, 0.6);
 
     if (game.difficulty > 2) {
-      if (Math.random() < 0.7) {
+      if (Math.random() < 0.75) {
         // tether ball
         level.fillBG.push({
           x: 2495,
@@ -1621,9 +1635,7 @@ const level = {
         if (game.difficulty > 4) spawn.nodeBoss(2850, -80, "spawns", 8, 20, 105);
       } else if (game.difficulty > 3) {
         spawn.shooterBoss(2200, -650);
-
       }
-
     }
   },
   //*****************************************************************************************************************
diff --git a/js/player.js b/js/player.js
index 9db1818..e3cf049 100644
--- a/js/player.js
+++ b/js/player.js
@@ -331,10 +331,12 @@ const mech = {
           //find what mods I don't have
           let options = [];
           for (let i = 0, len = b.mods.length; i < len; i++) {
-            if (b.mods[i].name !== "quantum immortality" &&
+            if (b.mods[i].count < b.mods[i].maxCount &&
+              b.mods[i].name !== "quantum immortality" &&
               b.mods[i].name !== "Born rule" &&
               b.mods[i].name !== "leveraged investment" &&
-              b.mods[i].count < b.mods[i].maxCount) options.push(i);
+              b.mods[i].allowed()
+            ) options.push(i);
           }
           //add a new mod
           if (options.length > 0) {
@@ -383,16 +385,16 @@ const mech = {
         ctx.fillStyle = "rgba(255,255,255,0)";
         ctx.fillRect(0, 0, canvas.width, canvas.height);
       }
-      randomizeMods()
-      randomizeGuns()
-      randomizeField()
       randomizeHealth()
+      randomizeField()
+      randomizeGuns()
+      randomizeMods()
       for (let i = 0, len = 7; i < len; i++) {
         setTimeout(function () {
-          randomizeMods()
-          randomizeGuns()
-          randomizeField()
           randomizeHealth()
+          randomizeField()
+          randomizeGuns()
+          randomizeMods()
           game.replaceTextLog = true;
           game.makeTextLog(`probability amplitude will synchronize in ${len-i-1} seconds`, 1000);
           game.wipe = function () { //set wipe to have trails
@@ -463,7 +465,6 @@ const mech = {
     }
     mech.health -= dmg;
     if (mech.health < 0) {
-      console.log(b.isModDeathAvoid, b.isModDeathAvoidOnCD)
       if (b.isModDeathAvoid && !b.isModDeathAvoidOnCD) { //&& Math.random() < 0.5
         b.isModDeathAvoidOnCD = true;
         mech.health += dmg //undo the damage
diff --git a/js/spawn.js b/js/spawn.js
index 0a33e9e..d2d78d3 100644
--- a/js/spawn.js
+++ b/js/spawn.js
@@ -330,15 +330,15 @@ const spawn = {
     };
   },
   springer(x, y, radius = 20 + Math.ceil(Math.random() * 35)) {
-    mobs.spawn(x, y, 8, radius, "#b386e8");
+    mobs.spawn(x, y, 10, radius, "#b386e8");
     let me = mob[mob.length - 1];
     me.friction = 0;
-    me.frictionAir = 0.1;
-    me.lookTorque = 0.000005;
+    me.frictionAir = 0.006;
+    me.lookTorque = 0.0000008; //controls spin while looking for player
     me.g = 0.0002; //required if using 'gravity'
     me.seePlayerFreq = Math.round((40 + 25 * Math.random()) * game.lookFreqScale);
-    const springStiffness = 0.002;
-    const springDampening = 0.1;
+    const springStiffness = 0.00014;
+    const springDampening = 0.0005;
 
     me.springTarget = {
       x: me.position.x,
diff --git a/todo.txt b/todo.txt
index d5355dc..e694c58 100644
--- a/todo.txt
+++ b/todo.txt
@@ -1,7 +1,17 @@
 ************** TODO - n-gon **************
 
-mod - Collision avoidance system
-  10% chance to dodge a collision
+level - add wrecking ball boss to other levels
+  it could work on rooftops and satellite
+
+mod - make bodies destroyable
+  they drop ammo and heals
+
+mod - BIOS update
+  lose all mods other than BIOS update
+  deal +100% damage from all sources
+mod - Infrared Sensors
+  You can see invisible enemies
+  this seems weak, maybe add to one of the fields
 
 mod - mines - fire something instead of needles on activation
   foam?, flak?, vacuum bomb, super balls