So I played the game and when I lost all my lives by stage 7 or so, and I was forced back to level 1, I felt a bit disinclined to continue playing.
I understand the appeal and why you gave the player only 3 lives to complete the entire game. You could argue that games are way too easy these days, but you might consider that while competing in the current market, it might make sense to fall in line and give unlimited lives.
You might be able to stand out with this gimmick, but I'm not sure.
The platforming and graphics were excellent by the way. Great work overall on the mechanics and visuals.