When you are fighting in the arena, it is easier to equip the Scatter Gun (because of the large blast radius) and shoot or punch your enemies into the lava. They will die instantly, and you can focus on other attackers.

Press Circle to kick just before landing from a high fall.

To get the awsome light Jak first you have to unlock light Jak than when you get some moves hold L2 and press triangle and x at the same time and you will turn into the light jak that is on the back. (You might have to unlock it first.)

When you are in the section of Haven City called New Haven City, go to the sewers to turn on the switch. Go back the way that you came by going up the elevator. After doing this, try to get to the Freedom HQ. You will not be able to. Do not switch hover zones, because you will fall into a deep abyss. After going back into the city you will have to save somewhere else in that the New Haven City section. If you do not do this, it will remain that way.

When Damas is trapped underneath the dozer when you get to the palace ruins, he will tell you who his son is. It is Jak, but Damas calls him Mar. The legendary Mar is thus none other than Jak.

Precursors:
When go down into the catacombs where the palace used to be, once you get to the core you will be at the planet's defense system. After talking to one of the Light Precursors, the doors in front of you will open. You will then see that the Precursors are really Ottsels like Daxter. They just made up the big and powerful statues because they were very small.

Hero mode:
Get hero mode on you secrets list. After you defeat the game, buy it off the list. The game will tell you to save a file for it. When you play it, you will have twelve guns. Whatever secrets bought during the game will go into hero mode. Also, your orb count goes down in hero mode from the many orbs that you got during the regular game. You will also have the cars that were obtained and used. You will also have the first two of Dark Jak's powers and the first three powers of Light Jak. You also have the jet board with you. You also get all armors, so you will not have little health.

Arena:
When you are fighting in the arena, it is easier to equip the Scatter Gun (because of the large blast radius) and shoot or punch your enemies into the lava. They will die instantly, and you can focus on other attackers.

Awsome light Jak
To get the awsome light Jak first you have to unlock light Jak than when you get some moves hold L2 and press triangle and x at the same time and you will turn into the light jak that is on the back. (You might have to unlock it first.)

Get hero mode on you secrets list. After you defeat the game, buy it off the list. The game will tell you to save a file for it. When you play it, you will have twelve guns. Whatever secrets bought during the game will go into hero mode. Also, your orb count goes down in hero mode from the many orbs that you got during the regular game. You will also have the cars that were obtained and used. You will also have the first two of Dark Jak's powers and the first three powers of Light Jak. You also have the jet board with you. You also get all armors, so you will not have little health.

When in Spargus, grab a Leaper and double jump into the water. The Leaper will be standing on the water, and you can move around.

OK this cheat is relle kool all u have to do is have 1 or more precuser stone when u buy hero mode. When u buy hero mode it will start u off with all the guns u have two dark jak powers and 3 light jak powers. It will also start u off with all the cheats u have gotten in the other game uve betten.

Once you defeat the final Boss (Cyber Errol), an intermission sequence will show Tess becoming an Ottsel. After that,go to the gun courses in Haven City. You will see that Tess is still normal and not an Ottsel.

When go down into the catacombs where the palace used to be, once you get to the core you will be at the planet's defense system. After talking to one of the Light Precursors, the doors in front of you will open. You will then see that the Precursors are really Ottsels like Daxter. They just made up the big and powerful statues because they were very small.

These can be bought in the Secret Menu:
Audio Commentary - 5 Precursor Orbs after buying scene players 1-3
Bad Weather - 5 Precursor Orbs After Act 1-1
Big Head Mode -3 Precursor Orbs After Act 1-1
Blaster Damage Upgrade - 6 Precursor Orbs After Act 1-9
Dark Jak Invisibility - 25 Precursor Orbs After Act 3-11
Fast Movies - 5 Precursor Orbs After Act 1-1
Hero Mode - 5 precursor orbs, after finishing the game
Increased Blaster Gun Ammo Capacity - 4 Precursor Orbs After Act 1-17
Increased Peace Maker Ammo Capacity - 4 Precursor Orbs After Act 2-19
Increased Scatter Gun Ammo Capacity - 4 Precursor Orbs After Act 1-17
Increased Vulcan Fury Ammo Capacity - 4 Precursor Orbs After Act 1-24
Invulnerability - 100 Precursor Orbs After Act 3-11
Jak 3 Model Viewer - 2 Precursor Orbs After Act 3-11
Jak And Daxter Model Viewer - 2 Precursor Orbs After Act 1-24
Jak II Model Viewer - 2 Precursor Orbs After Act 2-25
Level Select: ACT 1 - 5 Precursor Orbs, buy it after Act 1
Level Select: ACT 2 - 5 Precursor Orbs, buy it after Act 2
Level Select: ACT 3 - 5 Precursor Orbs, buy it after Act 3
Mega Scrap Book - 2 Precursor Orbs After Act 3-11
Mirror World - 5 Precursor Orbs After Act 1-1
Peace Maker Increased Radius - 6 Precursor Orbs After Act 2-19
Rachet And Clank Gun Courses - 6 Precursor Orbs After Act 2-12
Scatter Gun Rate-Of-Fire Upgrade - 6 Precursor Orbs After Act 1-9
Scene Player Act 1 - 2 Precursor Orbs After Act 1
Scene Player Act 2 - 2 Precursor Orbs After Act 2
Scene Player Act 3 - 2 Precursor Orbs After Act 3
Scrap Book - 2 Precursor Orbs After Act 1-24
Slow Movies - 5 Precursor Orbs After Act 1-1
Small Head Mode - 3 Precursor Orbs After Act 1-1
Toggle Jak's Goatee - 2 Precursor Orbs After Act 1-1
Unlimited Ammo - 50 Precursor Orbs After Act 3-11
Unlimited Dark Jak - 50 Precursor Orbs After Act 3-11
Unlimited Light Jak - 50 Precursor Orbs After Act 3-11
Unlimited Vechicle Turbos - 30 Precursor Orbs After Act 2-25
Upgrade Vechicle Toughness - 15 Precursor Orbs After Act 2-14
Vulcan Fury Damage Upgrade - 6 Precursor Orbs After Act 1-17