tile sets
https://poltergasm.itch.io/reverie-grassland-assets
https://bakudas.itch.io/generic-dungeon-pack
https://ansimuz.itch.io/caverns-environment

background
https://vnitti.itch.io/grassy-mountains-parallax-background

other tiles
https://rottingpixels.itch.io/castle-platformer-tileset-16x16free (box)
https://o-lobster.itch.io/platformmetroidvania-pixel-art-asset-pack (slime)
https://szadiart.itch.io/pixel-fantasy-caves (scaffolds)
https://finalbossblues.itch.io/cloud-city-tileset (sign)

font
https://fonts.google.com/specimen/Yusei+Magic

ending image
https://www.flickr.com/photos/hjppo/32293689654/
https://www.flickr.com/photos/yellowstonenps/48795421263/

might've forgotten something but everything else *should* be my own work (even the sound effects)