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Inside the Mines, there are many different enemies that will come at you inStardew Valley. You’ll need to come prepared with powerful weapons as you get deeper in levels, and with rings equipped to enhance your defense and abilities. Things will get even more intense once you move on to Skull Cavern andGinger Island’s Volcano Dungeon.
Defeating these enemies can actually give you nice rewards in return, outside of selling the items they drop or using them in recipes. If you visit Gil in the Adventurer’s Guild, he’ll provide you with some nice goodies whenever you complete one of the Monster Eradication Goals.

Where to Find Monster Eradication Goals in Stardew Valley
If you want to find the location of all possible Monster Eradication Goals, you’ll need totake a trip to the Adventurer’s Guild.you may find this building in the northern region of Pelican Town,directly to the right ofthe Mines inStardew Valley.The guild is open from 2pm to 2am every day, with the exception of holidays.
Inside here, you’ll findMarlonat the front desk, andGiloff to the right in the rocking chair. In between them, there will be asmall bulletin board.Approach this and interact with it, and you’ll findall of the possible Monster Eradication Goals you can complete.Some entries might be filled with a ‘???’ if you have not discovered the monster yet. Most likely, these will be enemies you haven’t reached intheSkull Cavernor Volcano Dungeon.

How to Complete Monster Eradication Goals in Stardew Valley
Here, we will go overevery possible Monster Eradication GoalinStardew Valley, and whatrewardsyou can receive from it. We will also show you where you may find each enemy with ease to complete the goal. When you’ve finished one, you canapproach Gil in the Adventurer’s Guild, and he’ll give you your reward.
Slimes (all colors)
1000
The Mines, Skull Cavern, The Quarry, Secret Woods,Tiger Slime Grove (Ginger Island), Volcano Dungeon
150
The Mines
Savage Ring - Gain a short speed boost whenever you slay a monster.
200
The Mines, Skull Cavern
Vampire Ring - Gain a little health every time you slay a monster.
50
Skeleton Mask - The red eyes are glowing mysteriously.
Cave Insects (Bugs, Cave Flies, Grubs, Mutant Flies, Mutant Grubs, Armored Bugs)
80
The Mines,Mutant Bug Lair(Mutant Grub, Mutant Fly), Skull Cavern (Mutant Fly, Armored Bug)
30
500
Burglar’s Ring - Monsters have a greater chance of dropping loot.
60
The Mines, Skull Cavern (Iridium Crab)
Crabshell Ring - The top of the ring is made from enchanted crab shell.
100
Skull Cavern
Arcane Hat - The type of cowboy hat worn by a wizard.
250
Volcano Dungeon
Marlon’s Phone Number - His phone number can be used to contact him from home and engage in the Item Recovery Service.