Jak 2 cheats and cheat codes for Playstation 2

Infinite Orbs 
For any Underground Orb mission, if you grab the Orb at exactly 0:00, you'll get 
a "Mission Failed" and also the 3 Orbs you won. If you choose to try again, you 
can do this over and over and keep obtaining 3 more Orbs. 

Unlock cheats:
Get the indicated amount of orbs during game play:

5 orbs - Toggle Jak's Goatee 
15 orbs - Mirror World 
30 orbs - Big head mode 
45 orbs - Small Head Mode 
55 orbs - Scrap Book 
65 orbs - Scene Player Act 1 
75 orbs - Vulcan Fury Course 
95 orbs - Scene Player Act 2 
105 orbs - Peace Maker Gun Course 
125 orbs - Scene Player Act 3 
135 orbs - Reverse Races 
145 orbs - Level Select 
155 orbs - Infinite Ammo 
165 orbs - Infinite Dark Jak 
175 orbs - Invulnerability 
200 orbs - Hero Mode *

*Hero Mode will allow you to begin a new game with all 4 morph gun

Different scrap book:
Collect 200 orbs in Hero Mode. 

New bar decorations
Finish the game, and then return to the saloon

Blaster combo:
When you have the Blaster rifle and have it equipped, use the punch attack 
(Square) on an enemy, then quickly shoot (R1). Jak will knock the enemy in the 
air and finish it with a strong rapid fire.

Spinning rapidfire blaster combo: 
When you have the Blaster rifle and have it equipped, jump (X) then when in the 
air, spin (Circle) and fire (R1) while spinning in the air. Jak will start shooting 
rapidly while spinning. Use this to easily kill a group of enemies when surrounded.

No time limit:
Pause the game, hold down L1, L2, R1, R2 and Enter Up, Down, Left, Right
Submitted by: braydenwan

Invincibility:
Press Up, Up, Up, Left, Down, Down, Down, Left, Up, Up, Up, Left, Right
Submitted by: braydenwan

Hint:
This is not really a cheat but did you know that their is a higher jump than a 
crouch jump? This jump is a little difficult but it does work. All you have to do is 
find any spot in the game with a lot of room and do a roll jump and as soon as 
you touch the ground, press x. If you do this right, then you shall see how high 
you can jump with this undiscovered move.
Submitted by: Kingsluver92

Unlimited orbs:
Press pause and Press Circle, Circle, Square, Up, Down, Up
Submitted by: siaquinta