Two players can play locally or online in Shank 2s Survival Mode.
More Info @ PCGamingWiki
Shank 2 returns with a story of redemption as Shank, a former mob hitman with a dark and vengeful past, is thrust back into action when the lives of those close to him are endangered. Expanding on the original game’s rich and intuitive combat and control system, Shank 2 continues Klei's tradition of making fluid brawling controls and stunningly beautiful visuals that leapfrogs the competition in the 2D side-scrolling genre. The game also introduces an intense new, arcade-style survival co-op mode that has gamers working together to take down their foes, relying on the environment and weapon pick-ups for survival.
This page contains co-op info for Shank 2 on the PC. All information about Shank 2 was correct at the time of posting. Information is subject to change. If you see any errors please email us.