Thanks!
5th level is the last, so you've seen them all, congrats! Also, not many reach that far, so it's pleasant to hear that you've got to it :)
And as for the amount of enemies and bosses, I initially wanted to rotate them by replacing one enemy by a new one each level, and creating unique bosses for each level, but, well, I got tired working on this game 😅
Thanks for playing my game and for your nice words!