Question: how to unlock all characters in the incredible hulk pc?
Answer: Abomination - Defeat Abomination.
Classic Hulk - Collect 5 comic books.
Gray Hulk - Smash 7500 objects.
Ironclad - Defeat the U-Foes, trick a U-Foe into KOing their team mate, and defeat Abomination.
Maestro - Destroy a building in each neighborhood.
The Professor - Complete all jump challenges.