The horse is harmless, everything else is a rotten, filthy cheater. If you get inside a hamster, you lose 25 hp nearly every frame, or you can box it to keep it at arms length and only do 25 damage every second or so. The level of bullcrap that giraffe-types incur is beyond inexcusable. I can't hit it without getting hit. There is no skill to this game. Kicking is worthless, I do more damage jabbing than punching, and I can't dodge anything anyway, so it turns into a DPS game instead of a good game.
-Walls too sticky.
-Small mooks stunlock me, They're harder than the big guys.
-Coin placement is terrible. Why put coins above my head but below my maximum jump height? Why can't I short hop? Why put coins in such a way that I either kill myself getting or replay your awful levels to get the magnet, on the FIRST levels at that?
-Sword hit-box is smaller than the animation. A cardinal sin of game development.
-Springs aren't visible enough.
-Enemy placement is terrible. Large drop into big mook that quickly attempts to throw you into instant death?
-Building on previous, level design is full of gotchas. You introduce mechanics like jumping or springing and punish me for not knowing how it works yet. First jump? Bottomless pit. First Spring? Better place yourself right, or die by spikes. First grapple ball? Better know how it works before you jump or die. You used the HUD to hide the spikes that I'm supposed to spring between on 1-5. This is not good design, it is lazy and antagonistic.