We've updated the game to fix a bug with one of the achievements. In recent builds, the President Achievement (100%ing all levels) was not registering. This should be fixed now!
Anyone who should have got the achievement previously but didn't, you should be able to get the achievement by selecting your save file that 100% all levels or by beating a level with that save file.
If you ever have any issues with this or any other bugs in the game, please let us know! Thank you for your support all these years!