The game is easy to grasp and the leprechaun/floatie store items helped me realize early on that I should strategize my runs for the best gains too. Great job on the cute theme and models as well, they look amazing!
If there's one thing I can change, I would make the jump strength icon a spatial UI instead (eg. character squashes/shakes more and more as the jump strength increases) so the player can focus on the level much easily.