Yeah that's the biggest bug in the game, sorry about that! the spawning snake is supposed to be an infinite source of juice. theres a slime up top that does drop orbs though you can farm off that. Goal is to get the key at the end of the pipes, and then make it to the hidden door.  There are 3 levels and a boss level! I don't know if anyone outside our discord group has actually beaten the game yet, you could be the first!