"Deep Rock Galactic is a 1-4 player co-op FPS featuring badass space Dwarves, 100% destructible environments, procedurally-generated caves, and endless hordes of alien monsters."

From the Humble Choice July 2022. No restrictions as far as I'm aware. Good luck and have fun ^^
(Sadly the Humble Coupon for the DLC seems nontransferable and is instead directly applied, or I'd fork that over too lol)