The Red Solstice devs at Ironward continue to polish the experience and add new content on a regular basis. Today -- in addition to offering 50% off on Steam -- the team launched the "Pitch Black" update, which adds a new map, new missions, a new boss, more skills, a new soundtrack and boosts the game's visuals a bit. Here's the detailed update description.
It's still in Early Access, of course, but user reviews (more than 400) are still "Very Positive" and the team is turning its focus to adding single-player content in the new year. For now, it's a great tactical co-op game, offering 8 players some ridiculously hardcore combat against all manner of aliens/Martian monsters.