A very simple game, but it has a lot of comedic potential to it! For one, the contrast of the 2D art of the boot doing The Kickening and the 3D world around you made me laugh more than it should've when I... booted up the game.
Secondly, the fact that the boot can kick ghosts regardless of distance adds extra hilarity to me, because (even though I dunno the development behind your entry, so it may have just been a programming difficulty thing) it very much gives off vibes of "I am a two-dimensional being, thus I give approximately zero fucks about your concept of "depth". If I wanna give you a boot up the ass, you're getting a boot up the ass, and I ain't walkin' "closer" to you to give it."
Basically, add more polish, some fast-paced music, and some great comedic sound effects, and you could have a really funny and simple comedy game here. Nice work!