Updated credits list, with what the graphics were used for:Might still be forgetting some... don't think so though, will add if I notice
EDIT: Forgot sounds! Added now.
amidos2006 - Books
Andrius - tools, clipboards, papers, potted plants
Arachne - floor tiles
Arne - Rafan biologists
Bob le Moche - Glow Globs
can-o-spam - picture frames
ChrisFranklin - lens flares, glows
cougarten - 3qgar font
davidarcila - crates, barrels
dbb - flames, various machines
Emilio - arrow keys, monitor closeups, doors, toilets, vending machines
ETG - floor tiles, blood splatter
György Straub - greenhouse ground
hammedhaaret - shading and textures
Huge - bunsen burners, various machines
Hyptosis - walls, floor tiles, tables, chairs, doors, numpad parts, various machines
Joaquim - plants, parts of the Specimen
kavs - clipboard
Kazerad - blood splatter, various machines
KittenEater - faucet
Kren - tree
lulzapricot - numpad keys
meadowsweet - parts of the specimen, various machines
mojofltr - bathroom signs
Mr. Trianglehead - various machines
NMcCoy - crates, boxes, water, shadows
Oddball - Rafan in photographs
oneup - elegante pixel font
0rel - Veta's arm
oryx - chalkboard
OutofOrder - novel cover
Pencerkoff - wires, machine gun flash, flashbang sparks, papers, trim, tubes
pgil - doors
Radix - parts of the Specimen
rogerlevy - organs
tocky - computers, office desks
Traumadore - book cover
Zaratustra - trim, pipes, wall sides, zaratustra_assemblee font
chris_b - background ambiance
NialM - footsteps through water, reloading machine gun, flashbang bouncing
John Nesky - Monster heartbeat and vocalizations, generator hum, footsteps, gunshots, keypad sounds.
boomlinde - flashbang explosion
Yokky - music in greenhouse scene