Outpost 16 is a single-player level for HL2:EP2 that has a cinematic, moody tone with custom voice acting, models, scripted sequences and music.
This mod, is well, bad. The story isn't explained and its very difficult to figure out what to do. "Just pick up a gun and start shooting." is one order given and by the point you've gotten to the gun your objective is dead. The people who put this together didn't expect to give anybody any sort of reaction time. This is honestly the worst mod i've played gameplay wise.