Persistent.

n/a.
WARNING, THIS ACHIEVEMENT IS MISSABLE.
At the start of the game the One Eyed Kutkh is flying along in his spaceship when something goes wrong. After a series of speech/thought bubbles a bubble appears showing three levers, one bearing a cross, another a circle and the final a triangle. To earn this achievement click on the lever marked with a cross, four times in a row (note that you click the lever in the bubble, not the actual lever in the ship).

See video walkthrough part 1 from 0m38s to 1m40s for further help.

Sleeper.

Saw all dreams.
WARNING, THIS ACHIEVEMENT IS MISSABLE.
After crash landing you will recover 3 cog like objects and reinstall them into your ship, in search of the fourth you will jump down a hole and find yourself in a planet shaped labyrinth (maze). To earn this achievement you must first go in the exit on the left side, then go in the centre exit and lastly go through the exit on the right, after which a cut scene will play and this achievement is yours.

See video walkthrough part 1 from 3m54s to 5m28s for further help.

Explorer.

Found all exits of the labyrinth.
WARNING, THIS ACHIEVEMENT IS MISSABLE.
This achievement is earned for entering all four of the labyrinth exits, you already went through the left, centre and right exits to earn the "Sleeper" achievement so you just need to exit through the top to earn this achievement and when you do the achievement will pop.

See video walkthrough part 1 from 3m54s to 5m43s for further help.

A cunning plan.

Caused a quarrell between The Sun and The Moon.
This achievement is story related and cannot be missed.

Curious.

All the ends of all the branches reached.
WARNING, THIS ACHIEVEMENT IS MISSABLE.
This is by far the easiest achievement to miss, if you do, reload the checkpoint with an image of a person with a sun like head, giving a ladder to an Eskimo like person to restart at the bottom of the tree.

Anyway, after earning the "A cunning plan" achievement a cut scene plays out where the One Eyed Kutkh ends up back at his crashed ship and you find yourself in control of a little Eskimo looking guy.

You start by flying up to the lowest branch on a tree and your aim is to climb to the top, to earn this achievement, on your way to the top you must walk as far as you can to the right and the left of each set of branches (how far you can go towards the edge differs on each level) before moving up to the next set of branches (the achievement will pop on the level below the top branches, the ones with the two sun head people on a seesaw).

See video walkthrough part 2 from 3m01s to 9m47s for further help.

Survivor.

Visited a bear three times.
WARNING, THIS ACHIEVEMENT IS MISSABLE.
On your way up the tree, remembering to go as far left and right as you can on each set of branches, on the fourth set of branches, on the left side you will see two bears with a ladder leading up to them. To earn this achievement try three times to climb the ladder to the bears.

See video walkthrough part 2 from 6m43s to 7m28s for further help.

Stubborn.

n/a.
WARNING, THIS ACHIEVEMENT IS MISSABLE.
After reaching the top of the tree and finding the sun and the moon missing, the little Eskimo guy undertakes a mission to find the One Eyed Kutkh to resolve the dispute between the sun and the moon.

Back tracking the way the One Eyed Kutkh took, you find yourself back at the crashed spaceship. The little Eskimo guy asks the One Eyed Kutkh to return the sun and moons "space-boats", in reply a bubble appears over the One Eyed Kutkh showing the Eskimo guy and the One Eyed Kutkh with the "space-boats" in the middle of them. To earn this achievement, three times in a row drag the "space-boats" to the One Eyed Kutkh in the bubble.

See video walkthrough part 2 from 12m48s to 13m38s for further help.

Peacemaker.

Reconciled The Sun with the Moon.
This achievement is story related and cannot be missed.