Collecting Sewer Crystals
On planet Aquatos, you have the option of collecting sewer crystals for the plumber and trading them for bolts. When you first get to this part of the game, you can go through a small area and collect crystals, but why not just wait until you get the Magnet Boots before collecting mmost of them? When you wear these boots, you can access much more of the entire area. They allow you to walk on walls and ceilings, dodge enemies, collect more crystals, and even go through hidden tunnels on the ceilings and walls. By waiting to this point, it helps you stay alive while you collect tons of these crystals to trade for cold hard bolts!
Upgrade Flux Rifle Quickly
First go to the planet Mylon and then get out your flux rifle. Then go to the very end of the platform at the very beginning of the level. Next shot both of the robonoid commender's. It will take some time to beat them but each shot upgrades your rifle to the v3. Then it takes 2 shots. If they both die (they will)just jump off and start over. Just keep doing this till it is upgraded all the way.
Fast Weapon XP
Need easy stages to get weapon experience? Play the Annihilation Nation challene against Scorpio to rack up the XP. Some weapons, like the shield glove, may need different stages to gain XP. For the shield glove, try playing the battle missions in Marcadia and having the bevy of peons shoot your shield for XP.
The Bomberman Mini-Game
First, go to star pheonix's vid comic room. Press triangle to select chapter then press square. Now put in YING_TZU.Finaly, press start and you get transported to insomniac museum to play a Bomberman-like minigame. It can go up to 4 players.
Get a discount on weapons
If you have a save from Ratchet and Clank 1, you get a 10% discount on weapons when you buy them. Save must be past the 2nd hoverboard race.
Free Ammo and Health
Go to any challenge like Annihilation Nation, start the challenge and quit and it refills your ammo and health.
Wear Inferno Mode Armor Forever
When you get an inferno mode canister broken. Pause the game, go to skins, and equip current armor. You will have the armor on even after the Inferno effect wears off.
Sketchbook
Beat Game once then should be in Cinematics menu. Press L1 or R1 to cycle through.
RY3NO
Beat game then it should be in the first vendor on Planet Florana.
Mega Weapons
Beat game once and enter challenge mode. Now visit a vendor to purchase Mega Weapons.
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