Escape from the sewers.

Open all of the safes and locks in the game.

Complete Ada's segment.

Escape the police station.

Get to the Spaghetti save point in Snowdin.

Reach the mouse hole in the Ruins.

Get three items.

Get an item.

Shoot Tyrant's hat off his head.

Shoot the grenade you fed to an enemy.

Destroy a Mr. Raccoon.

Defeat an enemy with a knife.

Use Wooden Boards to board up a window.