Arm yourself with three of the same head.

Make your first cut with Calibrus.

Investigate the environment for the first time.

Kill 2 enemies with a single bullet in Single Player or Special Ops.

Help train the local militia.

Complete the Game on Easy Difficulty

Fully upgrade all weapons

Destroy 10 Ruin Barriers

Hobby Horse to Vorpal Blade to Hobby Horse Combo

Fully upgrade a Weapon

Collect all the Peaches in the Scroll of Destiny

Acquire the Teapot Cannon