ok , as i want the best for you i have some stuffs i must tell you :
first of all your graphics are amazing (mouse,turtle, pizza,police, and WATER) i really liked the water when you jump from it and the drop water... anyway you need negatives not the positives ^^
so lets say :
1) the hearts of life why its on the middle of the game??? i think you made something mistake like it should be on corner or it follows the player not staying on middle.
2)the attack is really annoying while i jumping the enemy run from me XD so do something while we are on standing not jumping...
3)ladder???? ok i liked the ladder but when i go down from ladder why its attacking?? i want to go down as i go up (same animations).
4)the checkpoint ( water ) is really perfect except the turtle why it has the same animation while he is swimming? we need more animation on it ^^
5)i couldn't kill the boss or its just a sample of the boss so we telling you what you need..
6)the pizza it should add some health like every 5 pizzas add half of heart or it add score
good luck on your game i wish you the best , keep the good work ^^