I'd really like to know what they were working on for three years. The graphics are the same, worse at times, most of the character models look the same, levels probably have textures lifted from the previous game, its the same engine, three of the four studios working on the title had nothing to do with the MP (though I have no idea what 2K China was doing). It doesn't take three years to create a story and make a semi-short (according to reports) single-player mode.
LOLOL I completely agree. I played for an hour (on a single screen, grrr) and couldn't work out what the fuss was about this game. It looks like a mod. I would even believe it if someone said the maps were procedurally generated using random rooms and corridors from the original game.
Same old boring NPC's from the original too, which had like.. three enemy types the entire game. Bzzzt, zap with lightning, bop on head with spanner/drill. £29.99? Are you having a laugh, 2k?