Trashy Humor is a hidden achievement in Honkai: Star Rail. See how you can unlock it, where to get Trash, recipes that use it, and its rewards in this guide!

How to Unlock Trashy Humor

Use Trash in Omni-Synthesizer

To unlock this hidden achievement, you need to synthesize items 10 times using Trash as one of the materials. This can be done by using the Omni-Synthesizer which you get during the start of the game.
How to Unlock Omni-Synthesizer

Where to Get Trash?

Get Trash From Destructible Objects

Trash is a Consumable item easily found all over the world of Jarilo-VI. It can be found in destructible objects and sometimes it can be a reward for interacting with trash cans or dumpsters.

Recipes That Use Trash

Recipe	How to Obtain
Punitive Food	Talk to Amo who is near the Goethe Hotel space anchor in the Administrative District.
Punitive Energy	Talk to the NPC named Nika in the Administrative District.
Yucky Fried Rice	When you enter the Grand Goethe Hotel in Boulder Town, answer the review form on the desk. Then, give it to Gertie outside of the hotel.
Vomit Inducing Agent	Talk to the NPC named Maxime, who is also known as the Forgetful Miner, in Boulder Town.

These are the recipes that use Trash as a material. They are fairly easy to obtain and once you get them, you can start synthesizing to get the achievement!

Trashy Humor Rewards

Get the Achievement

Achievement & How to Get	Reward
Trashy Humor One man's trash is another man's treasure	x5

After you finish synthesizing with Trash, you will finally get the Trashy Humor Achievement! Trash is truly precious.

For other Hidden Quests, check the guide out below!
All Hidden Quests Guide

Honkai: Star Rail Related Guides

All Missions and Mission Types

All Hidden Mission Guides

All Hidden Mission Guides