There is big monster at the coast.
When Finn tries to enter the tower at the coast, the monster will drive him away.
This is the low-spoiler guide for "How to pass the big monster at the coast" puzzle in Beyond the Edge of Owlsgard. Unlike in normal walkthrough, you get gradual hints on how to solve the puzzle. Click the big button below to see your first hint. If the hint contains a spoiler, you will be warned about it before clicking.