Fortnite

One of the main Plankerton quests around level 23 will ask you to talk to the paranoid survivor and kill the monster. Shortly after that, around level 28 quests, you will begin the toxic treasures challenge that tasks you with killing mimics (monsters hiding in blue level 3 chests), culminating in stage ten. Complete them all for the achievement and lots of V bucks!

Hello people for the Evil Things with Crazy Teeth achievement on page 10 of the Stonewood Quests there is a mission called "treacherous Treasure" you have to find the Survivor who is afraid of the evil thing with crazy teeth (soon to be known as a mimic) in a 15+ zone and kill the mimic in a successful mission.

Doing the above will unlock the side quest (s) toxic treasures, this requires you to find & kill mimics in the world.

How to spot a mimic? they look like lvl 3 chests (small blue ones) they will "jump/bounce around" growl and will take a little longer to open.
Once you have "searched" them they will transform and attack you so put a few rounds into its face and on its death you will get loot (various items) ,chests/mimics can be found in caves, mine shafts, Attics, behind beds, tombs, behind some walls/ support beams with many other places.
from my experience mimics wont make the chest noise telling you when you are near them,
The Outlander's "keen eyes" ability sadly wont help you here either but the good news if you are in a game when a mimic is found and killed by another player you get progress regardless of if you did damage to it or not.

Stage 1 - 3 mimics - 30 v bucks
Stage 2 - 3 mimics - 30 v bucks
Stage 9 - 6 mimics - 30 v bucks
Stage 10 - 6 mimics - 30 v bucks

30 v bucks x 10 stages = 300 v bucks which can buy you some loot Llamas

Don't let the mimics win and good luck everyone.

( i cant remember all stages/kills needed/v bucks but i can edit when needed )