I've just confirmed that this achievement is completing all 180 puzzles and not just completing any 180 puzzles.
I have 90 solutions (1-30 SE, 1-20 E, 1-20 M, 1 & 2-20 & 28 D) and I am willing to trade for the other 90 solutions if someone has them or parts thereof!
One last thing; I HATE THIS F***ING GAME!
(sorry)
If at first you don't succeed, you fail.