These achievements are obtained by playing through the game.

2+2=5 - Build 5 levels
Play through 5 levels

Who needs eyes - Build 10 levels
Play through 10 levels

Beyond the noise - Build 15 levels
Play through 15 levels

Eargasm - Build 20 levels
Play through 20 levels

I'm the sound of silence - Build 25 levels
Play through all 25 levels

The Archeologist - Read the credits after complete the game
You get this achievement for completing the game. Beat the final level to get there.

These are the other achievements you can earn throughout the game. Some achievements have links to videos if you need help achieving them.

The Listener - Complete the first three levels without fail.
Watch the video for level 1-3 in the section "Golden Ear"

Fast than semitones - Complete level 2 in less than 4min.
Go to the video for level 1-3 in the section "Golden Ear"

Turbo Boost - Use the turbo for more than 6s.
Complete level 9, put all the circles into any location, click the play button and click again to go into "Turbo" mode until it says "Level Complete"

Hacker - Skip more than 5 levels.
Go to the pause menu in a level and click "Skip Level" for 5 levels.

From square to circle - Put the level 10 loopers correctly with the first check
This is easy, just complete level 10 on when you play it, if you mess up, restart the level and try again. Here's a video to complete the level: Level 10

The sixth sense - Build the level 16 switcher correctly on your first try.
This is also easy, complete level 16 and, if you mess up the switcher, restart the level. Here's a video to complete the level: Level 16

The Architect - Build your first Looper correctly
I believe this is level 17, put both loopers correctly (both at 2). If you are unsure about this level, here's a video on how to complete it: Level 17

The cake is a lie - Complete 10 levels without hints
The description tells it how it is. Though I think "hint"-less levels don't count, but I'm not sure on that front. You CAN change layers, so that will make this achievement easier to obtain.Just don't click the "hints" button in the bottom-right hand corner (I would also avoid the buttons alltogether, just to be safe).

NOTE: These videos looked wierd when they were small, so they are full size :/
Sorry if they take up too much space.

AND: To make it more organized, I put these videos into a series of 5 videos per category.

"ALL" Levels Playlist

Level 1-3:

Level 4:

Level 5:

NOTE: These videos looked wierd when they were small, so they are full size :/
Sorry if they take up too much space.

AND: To make it more organized, I put these videos into a series of 5 videos per category.

Level 6:


Level 7:

Level 8:

Level 9:

Level 10:

NOTE: These videos looked wierd when they were small, so they are full size :/
Sorry if they take up too much space.

AND: To make it more organized, I put these videos into a series of 5 videos per category.

Level 11:

Level 12:

Level 13:

Level 14:

Level 15:

NOTE: These videos looked wierd when they were small, so they are full size :/
Sorry if they take up too much space.

AND: To make it more organized, I put these videos into a series of 5 videos per category.

Level 16:

Level 17:

Level 18:

Level 19:

Level 20:

NOTE: These videos looked weird when they were small, so they are full size :/
Sorry if they take up too much space.

AND: To make it more organized, I put these videos into a series of 5 videos per category.

Level 21:

Level 22:

Level 23: NOTE: This is also the last level you need to complete in order to get the Golden Ear achievement. (Also, thanks Har.ki for the video!)

Level 24: (Also, thanks Har.ki for the video!)

Level 25: Skip to 0.34 to get the final result. (Also, thanks Har.ki for the video!)