Basket adds Projectile Protection to a chestplate that can't come off, Laminar Labs is full of skeleton, witch and blaze spawners, and breaking one window lets the water out.
An Enderman, a burning coal ghost, a record with Fire Aspect, spawners hiding behind beams, and an emerald frozen in the ice at the bottom of the mine.
Emerald 6 turns up behind the only cracked brick in the dungeon, Chillblast Mines is full of hidden spawners, Scoti meets a creeper, and a second emerald sits in a glass case.
A mouse that won't behave, a waterfall that leads to the second intersection, a teleporter home, and a long hunt for one more emerald that turns up everything else.