for all those people who enjoy the game prototype and are stuck at some tough spots in the game ill give you some help because ive beaten the game twice. the best way to go with skills is to level up your movement powers first, they are very useful for many events and fighting. next ignore all ugrades for the musclemass power in the beginning, its not that usefull till the final boss. i suggest playing through the main story till you get the blade and armor power, it makes life easyer. (spoiler)once you get to the bossbattle in times square with greene you will probably have trouble killing her. i found a flawless way of killing her. you need the double airdash, speed and jump fully upgraded, and the blade ability to do an air to ground slash. once the battle begins get away from greene and jump on to a neer building and climb till you get to a ledge, once you get there taget green, jump off,and hold down Y (xbox) i dont know the controlls for ps3 but its prolly triangle? you will do the ground slash and do tons of damage to greens sub health bars. the fastest i beat a wave was 3 ground slashes. once you hit the ground repeat the process then when she is stunned just slash her limp body with X and Y (on the ground) (ps3 its probably Square and Circle) there is 3 waves and you should beat her easily. the only trouble i had any other times was fighting the supreme hunters. on the first fight i killed it by throwing stuff at it since close range attacks definately were too risky. just run around and pick up things and throw them, the muscle mass power is usefull here if you ignored my warnings or just liked how cool it is =). on the second hunter and final boss i used the same tactic (spoiler) on the aircraft carrier i picked up the helicopters and threw them and it did lots of damage, make sure you have muscle mass and the throw upgrade by now, this last boss can be frustrating it once took me 8 times to finally beat him, if you sont like my tactic then i saw another on cheatcc.com that i havent tried. their tip on killing greene is harder and more dangerous.i also suggest you play the story mode + as soon as you beat the game, so you can get those acheivements that you didnt get before like the one where you dont die the whole story. and thats it anything else post it here.