You will get this while playing the first 44 Levels.
But if you're curious. You see the Mouse next to the Cube in Level 19
⏰EST TIME TO COMPLETE 44 LEVELS: 30-45 mins
-Complete the first 44 levels to UNLOCK ALL of the Achievements except for the 4 Secret Rooms Achievements. (See those solutions for locations)
- I personally recommend using the D-Pad rather than the joystick. I found it was much easier and I died a lot less
x2 to Double Jump
Full Video Guide: