Wonderful game. I must admit 22 had me banging my head for a while untill i realised one of the reds is useless and I should just change back to white again to get to the blue. It's just great how you can make so much with such a basic idea.
The second Hard Achievement is freaking ridiculous, I have like 2 missions left to complete and the freaking progress is 69%. Really good game though XD I'm a big fan of Soul Games
You might have forgotten to get Challenges medals!