On a whim I got Space Hulk Deathwing.
Played the first 3 missions in single player on normal skill, and guess what....it's good.
Okay so there are issues:
The UI and menus are quite fugly.
The command wheel is a bit janky.
The dialogue is as pompous as ever.
The graphic style is a bit repetitively grey and grim.
The central crosshair twitch is still there.
It's pretty maze-like.
BUT:
It's more fun in single player as you get to explore the environments a lot more.
The graphics are good, if dark.
The level of GRIMDARK40KPORN is exceptional.
The grey corridors are broken up well enough:
http://steamcommunity.com/sharedfiles/filedetails/?id=911201446
http://steamcommunity.com/sharedfiles/filedetails/?id=911201331
http://steamcommunity.com/sharedfiles/filedetails/?id=911201240
http://steamcommunity.com/sharedfiles/filedetails/?id=911201044
http://steamcommunity.com/sharedfiles/filedetails/?id=908483572
http://steamcommunity.com/sharedfiles/filedetails/?id=907817491
Combat is decent. It's shooting 'stealers what do you expect.
The weapon effects are proper epilepsy-inducing. I can see this would piss some people off but I kinda like it. Assault Cannon is constant strobing, Flamer fire obscures everything. It kinda works with the "I am a fucking powerful terminator but even I can't see wtf is going on when there is bullets and stealer limbs flying everywhere".
There's mini-progression, relic collecting and micro-upgrading, which is nice enough.
In short, I'm enjoying it, and if you want to experience the Space Hulk vibe from a FPS perspective....this works.