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 review may contain spoilers
Half Life mods have always pushed the limits of how the story can be told further but there always comes a mod that introduces a story part that not even hardcore fans could think of.
In this mod, Freeman has been ordered to terminate the operation of the Gman (potrayed as a mad scientist) to prevent him from bringing in creatures from Xen via a portal.
The Self-adjusting skill level makes the mod one of the more harder ones for the serious gamers to enjoy, Pretty much at every turn you'll be facing Ambushes or groups of enemies and Puzzles.