diff --git a/js/bullets.js b/js/bullets.js
index f2a2d0c..7eecc22 100644
--- a/js/bullets.js
+++ b/js/bullets.js
@@ -73,6 +73,8 @@ const b = {
   isModVacuumShield: null,
   modRenormalization: null,
   modGrenadeFragments: null,
+  isModEnergyDamage: null,
+  isModBotSpawner: null,
   modOnHealthChange() { //used with acid mod
     if (b.isModAcidDmg && mech.health > 0.8) {
       b.modAcidDmg = 0.7
@@ -119,6 +121,23 @@ const b = {
         b.modBulletSize = 1;
       }
     },
+    {
+      name: "capacitor",
+      nameInfo: "<span id='mod-capacitor'></span>",
+      description: "increase <strong class='color-d'>damage</strong> based on stored <strong class='color-f'>energy</strong><br><strong>+1%</strong> <strong class='color-d'>damage</strong> for every <strong>5%</strong> <strong class='color-f'>energy</strong>",
+      maxCount: 1,
+      count: 0,
+      allowed() {
+        return true
+      },
+      requires: "",
+      effect: () => {
+        b.isModEnergyDamage = true // used in mech.grabPowerUp
+      },
+      remove() {
+        b.isModEnergyDamage = false;
+      }
+    },
     {
       name: "kinetic bombardment",
       description: "do up to <strong>33%</strong> more <strong class='color-d'>damage</strong> at a distance<br><em>increase maxes out at about 40 steps away</em>",
@@ -334,6 +353,22 @@ const b = {
         b.modNailBotCount = 0;
       }
     },
+    {
+      name: "scrap bots",
+      description: "<strong>+16%</strong> chance to build a <strong>bot</strong> after killing a mob<br>the bot will follow you until you <strong>exit</strong> the map",
+      maxCount: 6,
+      count: 0,
+      allowed() {
+        return true
+      },
+      requires: "",
+      effect() {
+        b.isModBotSpawner += 0.16;
+      },
+      remove() {
+        b.isModBotSpawner = 0;
+      }
+    },
     {
       name: "ablative mines",
       description: "rebuild your broken parts as a <strong>mine</strong><br>chance to occur after being <strong>harmed</strong>",
@@ -514,7 +549,7 @@ const b = {
     },
     {
       name: "Pauli exclusion",
-      description: `unable to <strong>collide</strong> with mobs for <strong>+1</strong> second<br>activates after being <strong>harmed</strong> from a collision`,
+      description: `unable to <strong>collide</strong> with mobs for <strong>+2</strong> seconds<br>activates after being <strong>harmed</strong> from a collision`,
       maxCount: 9,
       count: 0,
       allowed() {
@@ -522,29 +557,13 @@ const b = {
       },
       requires: "",
       effect() {
-        b.modCollisionImmuneCycles += 60;
+        b.modCollisionImmuneCycles += 120;
         mech.collisionImmuneCycle = mech.cycle + b.modCollisionImmuneCycles; //player is immune to collision damage for 30 cycles
       },
       remove() {
         b.modCollisionImmuneCycles = 30;
       }
     },
-    {
-      name: "annihilation",
-      description: "after <strong>touching</strong> mobs, they are <strong>annihilated</strong>",
-      maxCount: 1,
-      count: 0,
-      allowed() {
-        return b.modCollisionImmuneCycles > 30
-      },
-      requires: "Pauli exclusion",
-      effect() {
-        b.isModAnnihilation = true
-      },
-      remove() {
-        b.isModAnnihilation = false;
-      }
-    },
     {
       name: "quantum immortality",
       description: "after <strong>dying</strong>, continue in an <strong>alternate reality</strong><br><em>guns, ammo, field, and mods are randomized</em>",
@@ -722,7 +741,7 @@ const b = {
     },
     {
       name: "mass-energy equivalence",
-      description: "<strong>power ups</strong> overfill your <strong class='color-f'>energy</strong><br>temporarily gain <strong>50%</strong> above your max",
+      description: "<strong>power ups</strong> overfill your <strong class='color-f'>energy</strong><br>temporarily gain <strong>twice</strong> your maximum",
       maxCount: 1,
       count: 0,
       allowed() {
@@ -1242,6 +1261,22 @@ const b = {
         b.isModPlasmaRange = 1;
       }
     },
+    {
+      name: "annihilation",
+      description: "after <strong>touching</strong> mobs, they are <strong>annihilated</strong>",
+      maxCount: 1,
+      count: 0,
+      allowed() {
+        return mech.fieldUpgrades[mech.fieldMode].name === "negative mass field"
+      },
+      requires: "negative mass field",
+      effect() {
+        b.isModAnnihilation = true
+      },
+      remove() {
+        b.isModAnnihilation = false;
+      }
+    },
     {
       name: "Hawking radiation",
       description: "<strong>negative mass field</strong> leaks virtual particles<br>mobs inside the field take <strong class='color-d'>damage</strong>",
@@ -3150,12 +3185,21 @@ const b = {
           minDmgSpeed: 5,
           onDmg(who) {
             if (who.shield) {
+              for (let i = 0, len = mob.length; i < len; i++) {
+                if (mob[i].id === who.shieldTargetID) { //apply some knock back to shield mob before shield breaks
+                  const force = Matter.Vector.mult(this.velocity, 15 / mob[i].mass)
+                  Matter.Body.setVelocity(mob[i], {
+                    x: mob[i].velocity.x + force.x,
+                    y: mob[i].velocity.y + force.y
+                  });
+                  break
+                }
+              }
               Matter.Body.setVelocity(this, {
                 x: -0.1 * this.velocity.x,
                 y: -0.1 * this.velocity.y
               });
               Matter.Body.setDensity(this, 0.001);
-              // this.endCycle = 0;
             }
             if (b.isModRailNails && this.speed > 10) {
               const targets = [] //target nearby mobs
@@ -3187,9 +3231,9 @@ const b = {
                   })
                 }
               }
+              this.endCycle = 0 //triggers despawn
             }
-
-          }, //this.endCycle = 0  //triggers despawn
+          },
           onEnd() {}
         });
         mech.fireCDcycle = Infinity; // cool down
@@ -3200,7 +3244,7 @@ const b = {
           if ((!game.mouseDown && this.charge > 0.6)) { //fire on mouse release
             //normal bullet behavior occurs after firing, overwrite this function
             this.do = function () {
-              this.force.y += this.mass * 0.00015 / this.charge; // low gravity that scales with charge
+              this.force.y += this.mass * 0.0003 / this.charge; // low gravity that scales with charge
             }
 
             mech.fireCDcycle = mech.cycle + 2; // set fire cool down
diff --git a/js/engine.js b/js/engine.js
index 845460f..38f9f5b 100644
--- a/js/engine.js
+++ b/js/engine.js
@@ -144,7 +144,7 @@ function collisionChecks(event) {
             }
             mech.damage(dmg);
             if (mob[k].onHit) mob[k].onHit(k);
-            if (b.isModAnnihilation && mob[k].dropPowerUp && !mob[k].isShielded) {
+            if (b.isModAnnihilation) {
               mob[k].death();
               game.drawList.push({
                 //add dmg to draw queue
diff --git a/js/game.js b/js/game.js
index 91b7a7c..39e6d8d 100644
--- a/js/game.js
+++ b/js/game.js
@@ -710,6 +710,10 @@ const game = {
 
     if (!(mech.cycle % 60)) { //once a second
 
+      if (b.isModEnergyDamage) {
+        document.getElementById("mod-capacitor").innerHTML = `(+${(mech.energy/0.05).toFixed(0)}%)`
+      }
+
       if (mech.lastKillCycle + 300 > mech.cycle) { //effects active for 5 seconds after killing a mob
         if (b.isModEnergyRecovery) {
           mech.energy += mech.fieldEnergyMax * 0.07
diff --git a/js/mobs.js b/js/mobs.js
index 0123e3d..9672ed4 100644
--- a/js/mobs.js
+++ b/js/mobs.js
@@ -44,8 +44,6 @@ const mobs = {
     }
   },
   statusSlow(who, cycles = 60) {
-    console.log('slow')
-
     if (!who.shield && !who.isShielded) {
       //remove other "slow" effects on this mob
       let i = who.status.length
@@ -966,6 +964,7 @@ const mobs = {
           if (b.isModLowHealthDmg) dmg *= (3 / (2 + Math.min(mech.health, 1))) //up to 50% dmg at zero player health  //if this changes all update display in modOnHealthChange()
           if (b.isModHarmDamage && mech.lastHarmCycle + 300 > mech.cycle) dmg *= 2;
           if (b.isModEnergyLoss) dmg *= 1.33;
+          if (b.isModEnergyDamage) dmg *= 1 + mech.energy / 5;
           if (b.isModFarAwayDmg) dmg *= 1 + Math.sqrt(Math.max(500, Math.min(3000, this.distanceToPlayer())) - 500) * 0.0067 //up to 50% dmg at max range of 3500
           if (b.modEnergySiphon && dmg !== Infinity) mech.energy += Math.min(this.health, dmg) * b.modEnergySiphon
           if (b.modHealthDrain && dmg !== Infinity) mech.addHealth(Math.min(this.health, dmg) * b.modHealthDrain)
@@ -999,6 +998,9 @@ const mobs = {
               b.spore(this) //spawn drone
             }
           }
+          if (Math.random() < b.isModBotSpawner) {
+            (Math.random() < 0.5) ? b.nailBot(): b.laserBot()
+          }
           if (b.isModExplodeMob) b.explosion(this.position, Math.min(450, Math.sqrt(this.mass + 3) * 80))
         }
 
diff --git a/js/player.js b/js/player.js
index 32f1068..d7a95c7 100644
--- a/js/player.js
+++ b/js/player.js
@@ -915,8 +915,8 @@ const mech = {
         //player recoil //stronger in x-dir to prevent jump hacking
 
         Matter.Body.setVelocity(player, {
-          x: player.velocity.x - Math.cos(mech.angle) * speed / (mech.crouch ? 30 : 5) * Math.sqrt(mech.holdingTarget.mass),
-          y: player.velocity.y - Math.sin(mech.angle) * speed / 40 * Math.sqrt(mech.holdingTarget.mass)
+          x: player.velocity.x - Math.cos(mech.angle) * speed / (mech.crouch ? 30 : 10) * Math.sqrt(mech.holdingTarget.mass),
+          y: player.velocity.y - Math.sin(mech.angle) * speed / 30 * Math.sqrt(mech.holdingTarget.mass)
         });
         mech.definePlayerMass() //return to normal player mass
       }
@@ -978,7 +978,7 @@ const mech = {
           y: powerUp[i].velocity.y * 0.11
         });
         if (dist2 < 5000) { //use power up if it is close enough
-          if (b.isModMassEnergy) mech.energy = mech.fieldEnergyMax * 1.5;
+          if (b.isModMassEnergy) mech.energy = mech.fieldEnergyMax * 2;
           Matter.Body.setVelocity(player, { //player knock back, after grabbing power up
             x: player.velocity.x + ((powerUp[i].velocity.x * powerUp[i].mass) / player.mass) * 0.3,
             y: player.velocity.y + ((powerUp[i].velocity.y * powerUp[i].mass) / player.mass) * 0.3
diff --git a/js/spawn.js b/js/spawn.js
index 8288bfc..2051fad 100644
--- a/js/spawn.js
+++ b/js/spawn.js
@@ -639,7 +639,7 @@ const spawn = {
       }
     }
   },
-  timeSkipBoss(x, y, radius = 60) {
+  timeSkipBoss(x, y, radius = 70) {
     mobs.spawn(x, y, 6, radius, '#000');
     let me = mob[mob.length - 1];
     // me.stroke = "transparent"; //used for drawSneaker
@@ -1108,7 +1108,7 @@ const spawn = {
   //     }
   //   };
   // },
-  bomberBoss(x, y, radius = 90 + Math.ceil(Math.random() * 20)) {
+  bomberBoss(x, y, radius = 85 + Math.ceil(Math.random() * 20)) {
     //boss that drops bombs from above and holds a set distance from player
     mobs.spawn(x, y, 3, radius, "transparent");
     let me = mob[mob.length - 1];
@@ -1118,7 +1118,7 @@ const spawn = {
     me.seeAtDistance2 = 1500000;
     me.fireFreq = Math.ceil(30 + 2000 / radius);
     me.searchTarget = map[Math.floor(Math.random() * (map.length - 1))].position; //required for search
-    me.hoverElevation = 400 + (Math.random() - 0.5) * 200; //squared
+    me.hoverElevation = 460 + (Math.random() - 0.5) * 200; //squared
     me.hoverXOff = (Math.random() - 0.5) * 100;
     me.accelMag = Math.floor(10 * (Math.random() + 5)) * 0.00001 * game.accelScale;
     me.g = 0.0002; //required if using 'gravity'   // gravity called in hoverOverPlayer
diff --git a/todo.txt b/todo.txt
index 3c4040d..6209e81 100644
--- a/todo.txt
+++ b/todo.txt
@@ -1,5 +1,11 @@
+mod - your damage scales with current energy
+mod - 10% chance after killing a mob to gain a bot
+      that follows you until you exit the map
+
 ************** TODO - n-gon **************
 
+mod - you can no longer see your current health
+
 boss mob - just a faster and larger version of a springer mob
   could have a more frequent random walk
   always shielded