Here is the full list of all 49 Box Maze Extreme achievements.
You visited the controls page.
Ready for a Challenge?
Well done.
Congrats on well um, Cardboard rank.
Well that's better than Cardboard I guess :P
Now that's the stuff XD
Dang! That is pretty impressive!
You are a legend!
You just died for the 1st time.
You died 10 times.
You died 25 times.
You died 50 times.
You died 100 times.
You ate an apple.
Why would you put that in your mouth? -_-
You reached a checkpoint.
You visited the skins page.
You completed the tutorial.
You collected a speed boost.
You collected a jump boost.
Congrats! You passed all Box Maze Extreme levels