this is just an unity asset flip. I have seen this exact default platform game asset on the asset store already. Plus, the character's slow as walking thru quicksand all the time. Lastly, the game isn't even hard in an unfair way, its just hard bc the character is awful to control which is new good if you are trying to say this is unfair like unfair mario or other unfair games.
oh yeah the "unfairness" is shallow. its all just spikes. at least maybe have a portion of the ground collapse under you or something similar to make it less repetitive as I god bored of the spikes. air spikes are also weird although its more my nitpick...