Defeat mother Neptune.

Survive your first encounter with Yawn.

Defeat a Crimson Head.

Defeat a zombie.

Complete the treatment plant.

Defeat the Proto Tyrant.

Fight off the Proto Tyrant.

Use a Green Chemical.

Defeat Mimicry Marcus with a Molotov Cocktail or a Napalm Grenade.

Get picked up by the Infected Bat.

Create a Custom Handgun.

Shoot down a Hunter or an Eliminator while they are jump attacking in the air.

Defeat an enemy with a critical-hit headshot.