Thank you for playing! I'm glad you liked it!
The boss fight is hard to balance correctly, but I have really tried. The boss needs 50 bombs to kill yes, but I figured since this is the only combat in the game it's all concentrated into this fight. My hope was that players would find the fight hard initially, but as they figured out the boss moves and the bomb mechanics it would turn into a fairly easy task.
The game has been updated with a leaderboard for the post jam release and having the boss any easier would really kill any replayability.
I added the information for the game page that you can place multiple bombs which I hope will help.