Can't believe even this game is already 14 years old. Next to Doom and Duke3D this is probarbly the Shooter I have played the most. I love the fact the every map stands on it own. There is no real connection between them, just totally different random themes made into maps.
The game got 2 great add-ons and 3 crappy ones. Also there is a remake of most of the maps called Hell & Damnation.
I started on Nightmare difficulty without any Tarot Cards and collected them all in the process.
Painkiller has one stupid property that I have corrected with a mod. Normally you cannot play all maps on one difficulty. The Forest is only available on Trauma difficulty, but on Trauma the game ends before the last episode (Because Daniel never goes to hell)