Yes, indeed there is a slow flow of experience. That Achievements award skill points it seems like a great solution to it, but it is too late, you might consider this for your next game though. You could also change the 15 brilliant achievement to an impossible one, because of the time it takes, which is alot for a hard badge. Just a suggestion though.
is not that there are many possible solutions, but sometimes, you cant simply color a box by just logic, there are 2 or more possibilities, and the only thing you have left is trial and error, and that my friend, is tedious
wow, all medium badges, im not sating they are hard achievements, actually i really think they are just medium, but for the last one a hard one would me more gratifying after hours and hours of gameplay
maybe you could add a button or something to make the andy game faster, because it doesnt feel like farming in this game, and speeding things a little might be a good improvement.
at the start it was fun, but in world 4 it was very complicated for a game. not hard, you can think all of those stuff out, but it didnt felt like playing a game, more like doing a 6th or 7th grade math worksheet xD, no thanks. but good though nice idea