The Incredible Hulk Cheats :
Unlockable - How to get the grey hulk
by Unregistered May 06, 2013
Secret - Jump Challenge locations
The Jump Challenges can be found at the following locations:
1. World Financial Center
2. Behind the Woolworth Building
3. 20 Exchange Place
4. Third building south of the Flatiron Building
5. Beside the Empire State Building (fall into it)
6. Madison Square Garden
7. U.S. Trust Building
8. The building north of the Reuters Building. It has a star-shaped top. The jump ring is horizontal; you must look up to find it.
9. South of Time Square, near Jump Challenge #8, slightly further south between a skyscraper and a smaller building, down low.
10. Swiss Bank Tower
11. Citigroup Center
12. Carnegie Hall
13. Time Warner Center
14. Southeast of the Empire State University Subway
15. North central area of Central Park
Secret - Easy "Around The World In 80 Steps" Achievement
Travel to the United Nations building. It is on the east side, slightly northeast above Grand Central Station. Stand on one end of the flagpoles so that you are facing them in a long row in front of you. Take one step back if you are standing next to them. Charge a jump and land on the first one. Use standard jumps and only press the Analog-stick Forward. With some luck, you should have landed about four or five flagpoles from the first one. Repeat this about four times to get the achievement.
Secret - Defeating Skull
Unlockable - Unlockable Skins