To unlock the "2020" difficulty level (featuring Corona, Crisis, and Disaster), win at least once on every map in Free for All mode against 7 Hard AIs or human opponents.
To master the essential mechanics like grabbing and throwing your opponents, check out this quick guide: A.Gummys.Life.v1.1.4.rar
Use headbutts to stun opponents, which is often more effective than punching but carries the risk of lunging off the platform yourself. To unlock the "2020" difficulty level (featuring Corona,