ooooh, i totally forgot about that. yes the assets are 100% kenneys (minus some nigh unnoticeable modifications)
the "original pixel art" mentioned in the Gdd was referring to the previous art, because at the start of the jam we actually had a dedicated artist taking care of it, long story short, they couldn't finish in time, so we used kenney assets for the jam.
I totally forgot about the GDD because it was indeed written earlier, and when i went over it for a last check before publishing i was apparently too tired to notice the art part.
by the time i submitted i had been on a 18+ hour sprint trying to get it done and fell asleep before i could even give the page a description lol.