How do you unlock The Professor in the incredible hulk?

Answer 1

You need to trick a U-Foe into beating another U-Foe, How i did this was kill Vapor and then stun X-Ray, When X-ray was stunned i stood next to him after knocking him to low health, Then Ironclad hit me and took X-ray out. Once you've done that beat Abomination, Have fun!

Answer 2

You simply complete all jump challenges. (OK, maybe it isn't to easy)

Answer 3

Defeat the Abomination in the Game