In WWE Smackdown vs. Raw 2011 for PS2, PS3, PSP, Xbox 360, and Wii, you can unlock Stone Cold Steve Austin as a playable character.
In Christian’s Road to WrestleMania, win the WrestleMania Challenge against Stone Cold after winning all previous challenge matches.
Here are the challenges and how to access them:
Week 4 – After the Peep Show and before talking to Tiffany, go to the top locker room on the map and talk to Regal
Week 5 – Find Kane, and get challenged to an Inferno Match
Week 8 – Find CM Punk in the hallways, and talk to him
Week 9 – Find Jericho in the trainer’s room
Week 11 – Find Legacy backstage and fight them 2 on 1 at Superstars
WrestleMania – Check the Green Room to challenge Stone Cold