Day four of Survival Island. Basket lights a Nether portal under the island, digs out past a lava lake, knocks back a ghast fireball and reaches a Nether fortress.
Day two of Survival Island. Basket goes back under the island, fights off a stream of zombies, and tracks them to a spawner with two chests of loot beside it.
Day one of Survival Island. Basket starts on a small grassy island in the ocean, digs down for coal and iron, lights the island with torches, and meets a creeper before sunrise.