Prompt:
3cp payload
the payload cart must go up a wall, sideways on a wall, upside down, and underwater
optional: blackmesa theming (did not do)

Pride signs texture made by Cindycomma https://tf2maps.net/downloads/pride-signs.15015/
thank to superluxdelux for giving me fixed hydro water to use for the water blocks, and for some help with configuring the payload logic