I decided to add additional difficulty levels. The game can be played in Easy, Normal and Hard. Most games today just add destructionstrength or resistability to the enemies' skills. I wanted to have the same effect as in Doom 1 and Duke Nukem 3D: With increasing difficulty the levels contain more enemies. So you have a new "feeling" when you play the same level with a higher difficulty. Some very strong enemies appear much earlier in the game.
Here is a snapshot from a "HARD" level (shot in godmode):
