Phsyco, don't listen to any of them, here's what you must do:
First, build a circle completely out of 1x1 plates. Set the emmiter to arrow trail and light to players light. This should open a portal to autumn pond. Go to any duck and tell them Cool Boi/Captain Cthulu sent you. Upon hearing this they should show you the way to a secret underground tunnel where you will meet anti-badspot. He is tricky and will tell you that hitting Alt+F4 will give you adventure mode. You must battle him with a magic lobster that you gave yourself. He is tough, but if you trust the lobster, he will fire a laser, and blast your opponent away. This will bring you to the magic counsel of Badspot, Kompressor, Ephialtes, and Kalphiter. They will wave the admin wands around and a bright flash will occur. You will be taken back to the menu where the Adventure mode will be available. You will also be given a lobster and a time machine. Go back in time and give it to your past self and head back. You have unlocked adventure mode.
