Note: It's currently in-development, so it will be in Early Access.
I tested some quite early builds of the game, while promising it did lack a lot of polish when I tried it. Hopefully with a Steam release coming up the developer would have really fleshed it out. I liked what I saw though, so it will be interesting to check out the new release.
It's worth noting, that the game can be picked up right now on itch.io. It has a demo available, as well as (what I assume) will be the same as Steam will get if you pay for it.
About the game:
XENOMARINE is a dark, atmospheric, sci-fi/horror themed roguelike in which you play a space marine exploring an alien-infested space station. Starting out with little more than a crowbar, you will fight to survive against over 80 increasingly powerful alien species, as you progress as far as you can through infinite randomly generated levels.
With no starting classes, develop your character into the ultimate fighting machine by means of in-game choices: choose between over 70 skill levels as you gain experience from combat and from randomly generated missions, and create a unique build each time you play by finding and choosing between hundreds of unique usable items and individually upgradable weapons and armor.