Pain Train PainPocalypse

Brace yourself for a gruesome ride in Pain Train Painpocalypse, a heart-pounding first-person shooter set in the dark and gritty depths of a horror-filled New York subway system. Take on the role of Pain Train, an elite mercenary with a unique and terrifying ability: he drains the life force from his enemies as he obliterates them! While Pain Train was busy repelling alien invaders in space, a horde of cybernetic monstrosities regrouped deep within the subway tunnels. Now, they threaten to overrun the city. It's your mission to unleash hell and purge these infected cyborgs from the streets of New York once and for all! Prepare for intense shooter action and a desperate fight for survival.
summary by MetaCritic