tech: chain reaction now requires vacuum bomb, but it increases grenade radius and damage 33%
(and makes blocks explode)
needle gun fires with more regular timing
needles despawn 1.5s faster, for performance reasons
intro level power ups are relocated
tech: decomposers renamed necrophage
if mobs are one shotted before they see you, they no longer alert nearby mobs
clicking on a mob in testing will log that mob in console
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