TETRA's Escape

Each world is made up of 8 levels that you need to complete. As you progress, new Tetras will become available with new shapes to turn into. To complete a level, you need to bring one of the Tetras into the vortex. You do not need to collect any stars to finish a level, but since there are trophies tied to stars, it is recommended that you collect all of them in the first 4 worlds.

A full video walkthrough of all the levels in world 1-6 (only ones needed to get all the trophies) courtesy iBaddriveri can be found below. If you rather perfer a text guide. You can find one Here courtesy of Dino_Roar