Voidside

"Voidside is a single-player Action game with unique game mechanics, where players engage in high-octane Parkour FPS combat across 11 maps, aiming for high scores while managing health and coins dropped by enemies. Use dropped coins to purchase weapons and upgrades, with four weapons and nine upgrades available, and employ slick movement inspired by popular shooters to outmaneuver enemies. The more enemies you kill, the more spawn, leading to intense battles."