The gameplay is too simple. If you think about it, it’s not much harder than Flappy Bird. And it brings absolutely no enjoyment.
The character sprite is too simplistic. It’s literally a single frame that gets mirrored back and forth. While it kind of works for the arms, creating an illusion of climbing, if you focus on the legs, it starts to look downright ridiculous — like the Thriller dance from behind.
The music is just awful. It sounds like the author not only doesn’t know music theory but, on the contrary, knows it and does everything against it (though I fear that’s not the case). It sounds like a cat climbed onto a piano keyboard and is pacing back and forth. What’s more, the beginning feels like a straight rip-off of “Oh, Pretty Woman.” If this music were text, it would look something like this: “Pretty woman wakim’ pown de striet / Pheggy sdfa jsdlkasdaf sd sdlfasdf lklsadlfj.” It creates no atmosphere whatsoever — it just makes you turn the volume down to zero so you don’t have to hear this incoherent mess.
If you put the game in fullscreen on a 21:9 monitor, everything gets stretched out of place.
Also, the tower sprite has obvious texture bleeding.