This game contains 8 achievements total, 4 of which are hidden. The first four are for for beating each normal level, and the last four are for beating each level again in Mirror Mode.

Fun Fact: If you'll notice, each achievement is made of binary code. Translated to decimal, the first four say 140-1, 140-2, 140-3, and 140-4. The other four are exactly the same, but they're reversed, so they don't translate well. Just imagine they say 1-041, 2-041, 3-041, and 4-041 respectively.

The main game is comprised of three levels, with one achievement for beating each. There was also a fourth level added after release, which has its own achievement.

10001100-01: Complete the first stage

10001100-10: Complete the second stage

10001100-11: Complete the game

10001100-100: Complete the fourth stage

Once you beat the game, you can enter a hidden Mirror Mode, with another achievement for each level. To enter Mirror Mode, get to the hub world, ignore the main levels you just beat, and head to the right of the gate. You will find new levels, identical to the main ones, but mirrored. That means where you went right, you now have to go left. In addition, if you die even once, you get sent back to the hub world and you have to start the level over from start. Good luck!

10-00110001: Complete the first mirror stage

01-00110001: Complete the second mirror stage

11-00110001: Complete the third mirror stage

001-00110001: Complete the fourth mirror stage