I had Space Hulk - Deathwing sitting in my Steam account for a while now.
It is a Warhammer 40k FPS game where you're (supposedly) a Space Marine of the Deathwing.
The elite 1st Company Terminators of the Dark Angels.
I've never played a game that looked and sounded that good, wasn't buggy, but the devs got their subject matter so horribly wrong.
You're playing a guy who is a 9 foot tall killing machine super soldier, who is wearing Terminator armor, which basically makes you a walking Tank of the highest order. The armor should shrug off 99% of stuff thrown at it, while being able to support an array of weaponry so deadly they can obliterate all but the largest and most heavily armored foes that the entire Milky Way Galaxy (in the lore) has to offer.
Oh and that guy is also a psychic with the ability to conjure up lightning and fire blasts with his mind, from inside said Terminator armor.
Yet this is a common sight.
You can literally be killed by, ostensibly, a human with a normal rifle lmao.
That said, if you're looking for good horde mode style gaming, this has it in f***ing spades.
For some reason they gave the Space Marines tissue paper armor and nerf guns.