Changed floor & ceiling collisions back to simple box

Added killbox to the top of the elevators

Added SCP room behavior on 3rd floor

Rework level 2 layout, reduce map size, make levels closer together

Fix game-breaking bugs & collision issues, reduce 2nd floor size, adjust lighting

Fixed positions of some signs, changed floor mesh to use complex collision as simple

Add signs for location navigation, move some rooms around, misc changes

Add reflection captures and fix placements on some doors

Add more weapon spawns, add elevator button sound

Disable debug elevator calls