Jak 2

As Dark Jak, hold L1 and press X.

As Dark Jak, Giant Form, use Dark Bomb and there will be an extra wave. It will be longer if you use Dark Blast.

After you have gotten the hoverboard go to any place that has water or the mud zaping stuff or dark eco. You can hover over it.

At one point their is this mission where you collect one piece of the artifact. Then all the guards come chasing after you and you can't go into the water. Instead of shooting all the guards, just use your hover board to get past all of them before they some come out of their Hover-van. (note) The red lazer from their Hover-van will be pointing at you but just ignore it. It won't hit you. Also even thought you're on the Hoverboard you still can't go on the water orelse you'll get killed.

When you finally gain unlimited access to the hoverboard there are two attacks to my knowledge that you can preform, one of which is also a speed boost. To perform these attacks, you must hit these buttons at the smae time: up+R1+X =flip attack left/right+R1+X =side spin move than when you hold those buttons when Jak lands, he'll grunt and you'll recieve a sudden speed boost. A sign that shows you've preformed the move correctly is that the hoverboard turns a bright blue for an instant then reutrns to its normal color. If you manage to hit a guard with these moves, it takes about 3-4 hits ti kill one. Note: the directional part of the moves must be done on the left analog stick.

After you get out of a police hover car,hit two of any people. Then after a red box will fall from a police car, hurry to pick it up then you have the scatter gun.

Steal a gaurds zoomer and the alarm will go off, then get to the edge of the area that your in and get out of the zoomer, and the alarm will stop then get back in the zoomer and you have the zoomer. Note: this only worked once for me.

Go up to a guard and jump on his head he will try to hit you.You can do this as many times as you want and you wont get caught.

When you get in Hero Mode you will start out with all the weapons and you enemies will be a lot stronger. Hero Mode will also has different secrets.

When you get to the red machine with the spikes on the front change into the Dark Jak Form. It will make you go faster until you get to the part where it changes back to the normal color. Make sure you dodge the missiles that the machine is shooting.