Coopventure is a two player cooperative puzzle map, which solely focuses on puzzles and platforming. It takes about 2-3 hours to complete.
To play the map, download the file from the link and move it to your maps folder, which should be Documents\My Games\Terraria\Worlds.
Host a game, and set a password, so other random people can't accidentally join you. Invite your friend and wait for them to join, then you can start playing the map!
Some form of voice communication is highly recommended.
-Create a softcore character, then trash your copper starting items after you enter the map.
-Once you get something from a chest, that item is YOURS. DO NOT give your partner or discard any item you loot from chests!
-Do not use any items dropped by enemies, do not buy anything from NPCs