Here is the full list of all 63 Pixplode achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Complete all tutorial levels.
Complete level 30.
Get three stars on ten levels.
Get three stars on twenty levels
Get three stars on thirty levels
Get three stars on forty levels
Get three stars on fifty levels
Finish level 16 in three moves.
Make a block fly very fast
Finish the game
Zero. Zilch. Zip. Nada. Nothing.
Remember - not a prime number.
"Ein, zwei - polizei"
"(...) then shalt thou count to three, no more, no less. Three shall be the number thou shalt count, and the number of the counting shall be three. Four shalt thou not count, neither count thou two, excepting that thou then proceed to three. Five is right out. Once the number three, being the third number, be reached (...)"
What's supposed to be lucky there?
"You just rotated the 6, right?" - "No, it has a different background!"
Short form of "AAAAAAAAAAA"
Sooo, fifteen? Heh. Heh. Heh...
What is the purpose of this letter anyway? Either you read is as "z-" or as "ks-"
"Pointless"? I don't think so.
PLEASE, do not leave it unclosed
Thanks to emotes it has become much more popular than it's brother
Mr. Nobbs couldn't make it, unfortunately.
I shall call it... "Semifred"?
Awww, you shouldn't have...
And Obelisk... OK, now you try to write something funny there.