Lumo

Every so often, a predetermined event at a particular point in the game will see you landing in the Warp Zone - A large, floating sun icon which you walk around on. Each ray from the sun is a path, and each path leads to a sequence which, if completed, gives you one letter of the word 'Extend' (a la Bubble Bobble).

This first letter is collected by following the bottom left path, which leads to a sequence where you must paint the floor tiles by walking over them and dodging bouncing balls and lasers, along with a timer. You pass through three rooms, each with it's own timer, and must simply turn every floor tile to an alternate colour by walking across it.

Do this for all three rooms without time running out (it's fine to die, the tiles won't revert, as long as you have time left to finish) and the first E is yours - along with this achievement. Should you run out of time, quickly dashboard and force close to restart back at the entrance!