Use the Rewind for the first time

Given Aloy's actions, all possible optional allies joined the defense.

Found all of the Metal Flowers.

Killed all the corrupted machines in every Corrupted Zone.

Took back all settlements from the bandit clans.

Travel by minecart to a point at least 500m in a single direction from where you started.

Throw diamonds at another player.

Acquire diamonds with your iron tools.

Bake a cake using wheat, sugar, milk and eggs!

Create an Iron Golem.

Found and knocked over all of the Grazer training dummies in the Nora region.

Construct a furnace out of eight cobblestone blocks.