HL1 Coop, -Singelplayer Modification - We wrote the year 2349, where only a few human beings live on earth. Since the great incidence, where a group of scientist have opened a portal to the fourth dimension, since then creatures threaten the earth and completely want to destroy our planet...

ThatMercenarySnake says

1/10 - Agree Disagree

Horrible...The more i played it...the more i hated it because of it's insane hardness level