I'd say crossing Borderlands 2 with DOOM 2015 is a quick explanation of this game. You unlock weapons and customize them with loot drops. You play through an entertaining campaign as many times as you like changing through the multitude of difficulty levels as much as you like. Packs of enemies are randomly spawned along with mini bosses so that clearly a level is always a little bit different. Basically find the loadout that feels the most kickass to you then run around gibbing demons to your hearts content.
