Actually really enjoyed this indie rogue-like gem with a fantastic co-op experience. In fact, it's meant to be played with friends, it doesn't hit the same singleplayer where there is no one to revive you, or clear the map with your epic guns with you, or sabotage everyone with the most abominable artifact debuffs known to man. It's a really addictive gameplay loop and a great risk-or-reward gimmick system, really teaching you the essence of sacrifice as investment for better future returns. My only hope is that the indie team eventually adds online co op.