Explore 38 rooms spanning 135 screens of platforming challenges as you search for the lost Deeplight stone to restore the light of the sun to the land.

Find and collect the 10 keys and 4 runes to open the path to the Deeplight stone, activate the 4 warp gates to quickly move around the labyrinth, and uncover all 20 hidden tablets to learn the story of the Deeplight stones and the tyrannical mage, Syal.
You’ll need to avoid devious traps, spikes, lava, and acid along the way, as well as traverse moving platforms, rush across crumbling bridges, and master the skill of wall-jumping if you expect to succeed.

Go beyond just reaching the Deeplight stone and collect every key, find every tablet, and explore every inch of the labyrinth to unlock all 5 of the game’s achievements.

Helpful tips:

When wall jumping, you do not need to hold down or repeatedly press the jump button — you just need to press in the direction away from the wall.

If you’ve just collected a difficult to reach key, tablet, or rune, you can always warp out of the room (by holding C or M) if you don’t want to risk walking back; warping saves your game as well. (Granite26 pointed this out in a comment, and it’s a pretty good tip)