I really like the atmosphere of the game, the fluid the animation of the player, that smear effect you get when you switch which direction you're facing.
Although the slight lack of air control slightly turns this atmospheric platformer into a slight rage game. And I'm not sure fully how unreal engine does exports, but for windows there's not a native way of extracting .rar files without using a third party software like 7-zip, as far as I'm aware. It's not a necessity, but I would look into if there's a way for you to export in a .zip file instead of a .rar.