made so you can backtrack to get bio sample on floor 23 (go to top right bedroom and pull lever again)
made biosensor arc narrower
fixed bug where a ghost on floor 21 doesn't move and keeps collision on death
made single-use levers darker after being toggled
fixed craft button still showing after removing ingredients
fixed possible soft lock on floor 29
fixed stunned hydra being able to attack you
fixed broken navmesh on floor 11