Sanctum 2

Action, Indie, Strategy, Multi-player, Steam Achievements, Steam Trading Cards, Steam Cloud, Single-player, Co-op, Steam Leaderboards, Full controller support, Online Co-op, Remote Play on TV, Tradable

Link to the game in Steam

Sanctum 2 is the sequel to the world’s first Tower Defense/FPS hybrid game. Pick from four unique character classes and embark on a mission to protect the oxygen-producing Cores from hordes of deadly aliens who are threatened by their existence.