When you die, quickly pause the game before the screen turns black, then select "Warp Room". You will return to the warp room without losing any lives.
Every time freezeballs, beams, or fire comes out, jump over the fence into the inside platform. They cannot touch you there, but fireballs will land everywhere -- just watch for their shadows. There is a series of elements you have to avoid. Then shoot Crunch with the bazooka and spin Cortex. The series is: fireballs, shoot Crunch, spin Cortex, freezeballs, fireballs, shoot Crunch, spin Cortex, fire, fireballs, freezeballs, fire, shoot Crunch, spin Cortex, beams, fireballs, fire, beams, freezballs, fireballs, beams, shoot Crunch, spin Cortex. If you win, you will unlock five secret levels for which you must collect a certain amount of relics in order to open the doors.
Do not collect everything at once in a level so you can get 100% game completion faster. Instead, use the following little trick to get all powers from the guardians. This is the order you should do it. First, do not get all Boxes and avoid Bonus Platforms to get 25 Crystals to defeat the Masks. Then, if you have defeated Cortex, return for the Gems and collect them before Uka Uka and Cortex. Next, this is the hardest challenge. Use all your effort and special powers and be as a quick as possible. Make sure you use the Freeze Timer Boxes to avoid getting a longer time in time trial mode. Remember all of them in each section of the warp room. You will get a secret warp room and extra levels to find the hidden treasures.
To get the following Gems, jump onto the Skull And Crossbones and find your way to the end:
-Red Gem: Crash And Burn.
-Green Gem: Wizards And Lizards
-Blue Gem: Arctic Antics
-Yellow Gem: Gold Rush
-Purple Gem: The Gauntlet
Collect all 46 Gems to get the alternative ending to the game.
Type in "WOMBAT" as a name when starting a new game. You will get every gem, unlock every level, and even the extra levels!But I'm not sure about the colored gems.