I thought it was decent, not really bad, but not really good either. I liked how you got cool stuff when you earned all of the achievements for a column, but the notifications sometimes appeared way after I got the achievement, and a lot of times it never gave me the achievements I completed. Like I had already bought the ship and beat the game, but I only had the 1/5 medal. If you fix that it will be a whole lot better. Also you should make the achievements into NG Medals :P
Yes, unfortunately, how the achievement system was designed, if you speed past the upgrade screen then you may see some achievements pop up far after you've gotten them. Thanks for the comments!
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