Enemies exhibit pack behavior with improved enemy AI. New landscape system (incorporating triangles) for smoother surfaces and architectural structures such as domes, arches, vaulted ceilings. Organic structures and rocky floors are possible with the new system. Improved texture palettes for greater detail. Improved water effects (rippling, transparent water) and new reflection effects. Faster game engine. Semi-transparencies on any surface for dramatic lighting effects like shafts of light. New Moves including crawl, monkey swing and speed dash to get Lara out of sticky situations.