Blood splatters and you laugh, awesome old school hack'n slash
Thats what came in to my mind when I smiled and shot aliens to pieces
The game of course is an "Diablo clone", and this of course doesnt make the game bad, the game is really funny when played in multiplayer mode. But the singleplayer is as enjoyable.
So in the start of singleplayer you get to choose a character, either a guy or a chick and there are about three choices for both genders. You get to pick some skills and you start the game.
First you should read the long long long background story because the singleplayer campaign starts straight from where the story ends. You are a mercenary and you are recruited by M.A.G.M.A (a mega corporation) to help people in need in one of M.A.G.M.A's plants. Not for too long after you enter the plant you get to shoot some aliens, now thats pretty funny since there can be a lot of those mofos coming at you and the blood splatters to walls and floor. By the time you have killed all the aliens you are standing in a pool of blood and shells.
You get to buy guns, ammo and armors. There are quite a lot of weapons in the game too, so anyways thats about it.