I can see that! Last year people said that the levels were too hard, so I tried to introduce more easier levels at the beginning. Trying to balance difficulty is, ironically, hard. :D -@h
Definitely! The biggest thing I struggle with in game design is probably balancing difficulty.
Honestly it's not that bad, it was really just the only critique I could think of. Like I said, it might just be me, because I like puzzle games, so that sort of stuff might come easier to me. (Maybe.) And if this was a longer game with more levels, it probably wouldn't even matter.