The A.C.I.B. has need of your special abilities to counter a new threat to civilisation. You have been given a rendez-vous in the warehouse district of the city to receive your mission briefing.
This is one of the greatest half life mods there is, I can't believe I didn't play this before.
The plot is good, the level design is excellent, every single thing is pretty detailed and this has one of the best introductions ever.
MUST PLAY