Is there a cheat that you can get all power ups and wepons if so plz answer..

Sorry mate, but there are no Cheats in Crash Bandicoot 3: Warped because you don't need them. If you think that's stupid then you are just plain lazy in games.

Not to my knowledge. You have to beat the bosses to unlock the weapons.

No, I don't believe there are.

Nope not at all sorry

The only Crash Bandicoot game with Cheats in it is the first one.

No there is no cheat to unlock all weapons and moves on Crash Bandicoot Warped! But here is another few Cheats you could find useful:
1. At the title screen, press up twice, down twice, left, right, left, right, []. This will unlock a Spyro demo!
2. During play, press triangle, 0, X, [] to gain an instant Aku Aku. This only works on the PAL version of this game and can only be used once per life.
3. To unlock Level 31, go to Level 14(the second motorbike race)and look for a signpost with an alien head on it. Hit it with your bike and you will go to Level 31.
4. To unlock Level 32, go to Level 11(the second dinosaur level)and use the Yellow Gem platform in the level. When you are being chased by the big dinosaur(triceratops)and when you see the SECOND pterodactyl(bird)let it lift you away. Hey presto, you are in Level 32. I hope you found these Cheats useful!

I Know How To Get All Power-Up Without Defeat all Bosses.
1 - At The Title Screen Loading For Demo 1st And 2nd
2 - If Demo 1st Starts Skip That Demo
3 - Link The Step 2 But The Demo 2nd
4 - Your Now is Title Screen Loading For Demo 3rd.
5 - If The Title Screen Gone Hold Triangle.
6 - You Now Play Level 17 Now Return To Warp Room (Note ! : If You Complete The Level Your Now Cannot Gets Out At The Warp)
And Now That's All Doing All.
Plz I Help You.