Everything has such detail to it and there are a lot of colors thrown around to give a good overall picture. The horizon, mountains, searchlights, and cliffs all create a realistic environment. I just stopped and looked around for a few seconds on most of the missions. The cars also look good and you can always tell what car an enemy is driving. The weapons fire is done well but the weapons themselves are pretty much average.
Enemies look sharp and detailed.
The engine is in between Unreal and Quake 2. All the different structures that are HUGE and all the different settings just look really good and add to the atmosphere of the game. The ambient sound is really good too and fits the current situation. Walk into a room with machines and you'll hear bleeps and things working. Walk next to a big energy structure and you'll hear a low powerful hum.