I like that you used the Paint-like human heads for this :) It's a shame you didn't take this style further, with the interface, the store, etc.
Also, the game lacks a more detailed environment. It would have looked better and added more variety to the gameplay. Effects for hits on both the player and enemies are also needed.
But right now, the main problem is that the power attack is pointless, and the enemies move roughly the same. So, you just end up running around mindlessly. Although setting traps adds variety.
If you're a beginner developer, this is a good job.
If not, then find a team to do more :)
There's potential, but it seems like you lacked the skills to realize it.
In any case, I enjoyed the game, despite my criticism.