1 Coin is possible. The only thing stopping us from 0 Coin is a coin on top of a block wall in 1-1. Wait, a wall? Couldn't we just wall jump? It looks way too big to be fully cleared with a wall jump, so we can rule that out. We can also clip through walls, which seems like the only way. A corner clip wouldn't work, we'd still collect the coin. Our only way to do it is a wall clip. Anyone up to try and find a setup?