Graphically, Requiem is more famine than feast. Textures were done by someone who, it seems, did not much care for their job. While colors and themes do vary between levels, you always get the feeling that you're in the same dull and unpleasant location. Enemies move smoothly and quickly, if not realistically. One place where the engine really falls apart is in environmental interaction. Almost nothing in the world is destructible. You can shoot out windows, but that is about it. Computers, desks, chairs, fire extinguishers, and most everything else can take a rocket in the kiester without a scratch. Bullet holes don't show on anything. The only sign of you firing are spent shells on the ground, which disappear after you fire a few more shots. Another annoying "feature" is evident when you walk up stairs. It feels like the whole world is shaking in a massive earthquake. It's a real nausea inducing experience. The fact that enemies end up dying half way through walls, often with only their feet sticking out like the Wicked Witch of the West, [or is it South or North or what?] is evidence of bad collision detection. Levels are all highly claustrophobic and enclosed because the engine can't handle anything more. Overall, the engine seems on par with that of Quake 1.
