Alpha 2.2 is focused on bug fixes:
Fixed map locations not being cleared properly
Fixed ammo pickup issues
Fixed an issue where killing an NPC could sometimes break enemies
Fixed an issue where double hammer switching could disable attacks
Updated frame limit options: V-Sync, 60 FPS lock, 120 FPS lock, Unlimited
Fixed Items UI layout issues
Fixed some UI sounds not playing
Disc Saw stun effect +30%
Lost Operator boss HP reduced by 20%