Here's a new trailer for the upcoming update to the S.T.A.L.K.E.R. mod, MISERY. The mod changes every aspect of the game including the difficulty, A.I., factions, weapons, visuals, weather, sounds, music, immersion, loot, adds new features and greatly enhances realism.

For more information about the mod, check out the official mod page over at ModDB:

http://www.moddb.com/mods/stalker-misery