Got this game from Steam, need some help

#1CthulhuPosted 6/13/2012 8:50:39 PM
I played episodes 1-3 to death back in the day, now I get it from Steam and there's 2 more episodes...HARD episodes. Gah! Need a walkthrough for this, anyone have a good resource that shows the levels and all the secrets? The FAQs on this site are pretty incomplete unfortunately