Damnation Shootout 2

How does the game Damnation Shootout 2 work?

Fun shooting game that'll take you to the bloody world of Doom. Your objective is to eliminate all your enemies before they get you first. You'll be able to personalize each game so they're all different: you'll be able to change how many enemies there are on each level, if you fight against a boss or not, how much damage you do with your weapon, how much damage you receive from the enemy attacks, etc.