How to Complete All Monster Eradication Goals in Stardew Valley



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At first glance, you might think Stardew Valley is only all about farming crops, raising animals, and pursuing a romance with the villagers. But it is also a known fact that this game has a lot to uncover below the surface. And when it comes to the monsters that lurk beneath the lighthearted scene that we usually see in the valley, there is indeed so much more to discover.

How to Complete All Monster Eradication Goals in Stardew Valley

If you have been wondering what you can gain from slaying monsters in this game, you are in luck because today, we will discuss all the Monster Eradication Goals and the rewards you will obtain from completing these quests.

Joining the Monster Slaying Guild

The Adventurer’s Guild is a small organization of people dedicated to vanquishing monsters in Pelican Town and maintaining the town’s peace and prosperity. You will be invited to join the Adventurer’s Guild by Marlon when you discover the Mines. But first, you will have to prove you are worthy of becoming an adventurer by slaying ten Slimes.

After becoming a guild member, you will be given some tasks to fulfill called the Monster Eradication Goals. These quests are all about defeating certain monsters a specific number of times. You will be rewarded with a special item whenever you finish a quest. Gil, another guild member, is the one who provides you with these goods.

To keep up with your progress, you may check the bulletin board inside the guild’s establishment.

Getting Ready to Hunt some Monsters

A horde of enemies await on each floor, and things will only get more difficult as you descend further in the dungeons. Here are some tips that can effectively aid you in your monster-slaying conquest.

Items to Bring

As you might already know, you can not survive in the Mines or the Skull Cavern without bringing a weapon. Moreover, you must always have food to restore your health and give you various status buffs.

Lastly, do not forget to craft some Monster Musks before challenging the dungeon foes. Monster Musk is a consumable item that you can get from the Wizard after completing the Prismatic Jelly quest. One spray of this strange perfume can lure out all the monsters hiding in caverns or dungeons, making them come at you in large numbers.

Combat Professions

As you improve your Combat Skill and reach certain levels, you will be prompted to choose between two Combat Professions.

Should you want to complete all Monster Eradication Goals with little difficulty, you might want to select the Fighter Profession to increase your attack damage by 10% and add 15 points to your health. Choosing the Brute Profession afterward will raise your attack damage to 15% and increase your health by 25 points. By picking this route, not only can you inflict more powerful attacks on enemies, but you will also be able to withstand damage from them.

If you have already decided on a Profession before and would like to change or reset them, you can head to the Sewers and access the Statue of Uncertainty. Offer 10,000 Gold to the statue, and you will get another chance to pick a new set of Combat Profession the next morning.

All Monster Eradication Goals

Many of these goals require a great deal of grinding to complete, but the reward you can claim for accomplishing them will most likely be worth your while. That is why we have written below a comprehensive guide on how to complete all Monster Eradication Goals, including the prizes you will get for completing each task.


Get the Slime Charmer Ring by defeating a total of 1000 Slimes. These tenacious foes can spawn anywhere in the Mines, but they can also be found in the Secret Woods.

Except for Big Slimes and Slimes in Slime Hutches, you can kill Slimes of any color to complete this Monster Eradication Goal. You may also include Dangerous Slimes to the list of monsters you would want to eliminate. Dangerous Slimes are tougher counterparts of regular slimes, and they can only appear in the Danger in the Deep quest or when you toggle on the Shrine of Challenge.

The Slime Charmer Ring is an item essential for players who love to dive deep into the Mines since Slimes are everywhere, and the ring gives you the ability to become invulnerable to Slime attacks. Also, you can not become a Slime Breeder without the Slime Charmer Ring. Slimes are known to be untameable. So even if you decide to take care of them in a Slime Hutch, they will still attack you senselessly.

Cave Insects

Defeat 125 Cave Insects to get the Insect Head. The Insect Head is a unique sword weapon that appears like the tusks of a colorful insect. To get the Insect Head, you must look for Bugs, Cave Flies, Grubs, and Dangerous Cave Insects in the Mines. Cave Insects are notorious for spawning in large numbers on levels 1 to 39, so completing this goal is not that difficult. What you can do is stay on floors filled with Cave Flies and Grubs and wait for for them to multiply until you can kill a bunch of them.

You can also hunt for Mutant Cave Flies and Mutant Grubs in the Mutant Bug Lair and Prehistoric Floors in the Skull Cavern. Armored Bugs in Skull Cavern are a bit bothersome to kill because no weapon can penetrate their armored skin. You can only defeat them with a weapon that has a Bug Killer enchant.

Void Spirits

Defeat a total of 150 Void Spirits to obtain the Savage Ring. Shadow Brutes are hard to avoid as they will persistently chase after you once they see you. These humanlike monsters dwell on lower floors starting at level 80, along with Shadow Shamans. Shadow Shamans can heal, so it would be best to finish them before healing other monsters. If you run into Dangerous versions of these Void Spirits, do not hesitate to slay them as well. 

When equipped, the Savage Ring can make you slightly agile each time you kill an enemy.


Strike off this goal from your list by killing at least 200 Bats. Like Slimes, lots of them can spawn on several floors in the Mines. The best strategy to defeat the Bats is to time your strikes precisely. It is best to use a melee weapon like a Sword instead of a Club or a Dagger when fighting Bats. When a group of Bats tries to lunge at you simultaneously from different directions, you can back away from them until they are all close together and then hit them all at once.

Try to defeat any Bat you encounter in the Mines or the Cavern, including the Dangerous ones. Most Bats can be seen on floors 41 to 69 in the Mines. You can also hunt for Bats on levels 101 through 120 since plenty of them spawn on those floors.

After completing this goal, you will obtain a Vampire Ring. The Vampire Ring can restore 2 points of your health after you kill a monster. This accessory is pretty useful when you get drained out of HP and food items while on a dungeon run.

Rock Crabs

The Crabshell Ring can increase your defense by 5 points. And you can only get them from the Adventurer’s Guild after killing 60 Rock Crabs.

Rock Crabs are a bit uncommon compared to the other monsters on this list, so it is a good thing that you will only need to kill 60 of them. Regular Rock Crabs are often found on floors 1 to 29 in the Mines. You can also come across some Lava Crabs on lower mine levels, particularly floors 81 to 119. Meanwhile, Iridium Crabs are usually seen in the Skull Cavern starting on the 26th floor.

Rock Crabs like to disguise themselves as stones, so get ready to strike them quickly when you see them rushing towards you. The fastest way to kill Rock Crabs is to craft some bombs and use them on floors with piles of stones.


Skeletons often wander the Mines on floors 71 to 79. They can cause damage by throwing bones in your direction when they see you, even at a distance. But they can attack you if you go near them or if you are in close range as well. Acquire the Skeleton Mask by killing 50 Skeletons.

There are two Dangerous versions of the Skeleton monster. One is the weaker ones which are beige-colored, while Dangerous Skeletons have a light blue hue. Skeleton Mages look similar to Dangerous Skeletons, except they wear a cape. These undead mages can shoot you with a long-ranged attack, and they can also cast a blue spell which can make you paralyzed for 2 seconds.

The Skeleton Mask does not give you special buffs or abilities, and it is only intended as an accessory.


Duggies and Dangerous Duggies appear on floors 1 to 29 in the Mines; Magma Duggies spawn on random floors in the Volcano Dungeon. Duggies are a little hard to spot, especially since they like to hide underneath dirt patches on the cave floor. They will only pop out and attack you if you walk on those dirt patches. Killing a total of 30 Duggies will earn you the Hard Hat reward. The Hard Hat is purely a cosmetic item, and it does not grant you a defense buff in any way.

Dust Sprites

Defeat 500 Dust Sprites to obtain the coveted Burglar’s Ring. As far as rings go, the Burglar’s Ring is a pretty nifty one. Killing monsters while you equip this ring will double the loot they drop. This ring is useful for farming resources, so make sure to kill as many Dust Sprites as you can to acquire it. 

Dust Sprites often spawn in groups in the Mines. Depending on your weapon, they are quite an easy kill since their attacks are not that powerful. It will only take 1 to 2 hits to defeat them. You can find Dust Sprites and Dangerous Dust Sprites on levels 41 to 79.


Get an Arcane Hat to sport the Wizard look. However, it is no easy feat as you will need to kill 100 Mummies to acquire it. Mummies are the most troublesome enemies in the game because they can revive 10 seconds after being knocked down. If you feel bold, you can also go after their Dangerous counterparts, although they can be more challenging to kill. 

One effective way to defeat them is to keep hitting them until they fall down and then plop down a bomb on their side to finish them off. Another method is to use a weapon upgraded with the Crusader enchant.

Pepper Rexes

The Knight’s Helmet is another headgear that you can claim from the Adventurer’s Guild after defeating 50 Pepper Rexes. Pepper Rexes are beastly dinosaurs that spawn in the Skull Cavern’s Prehistoric Floors. But very rarely, they are found on floors infested with monsters. You might have difficulty finding Prehistoric Floors, so you will have to trade plenty of Jade for Staircases with the Desert Trader and use them to look for Pepper Rexes in the cavern.

Pepper Rexes move slowly, but they can spit a powerful flame blast when you get too close to them. The trick to beating them is to diagonally stand while they prepare to attack and then proceed to strike at them while facing in another direction. They will drop Dinosaur Eggs, Prehistoric Bones, and sometimes Prismatic Shards when defeated.


Serpents are ferocious flying snake monsters that you will need to slay to acquire the Napalm Ring. Kill 250 Serpents to complete this goal. They are not hard to find, and you will mostly get overrun with Serpents on infested floors. Dealing with Serpents can be a tough grind, especially when they swarm at you all at once. Therefore, use a weapon like the Galaxy Sword to finish them off. Watch them closely once they are about to fly at you because that is when you should strike at them.

The Napalm Ring is one of the most powerful rings in the game. It gives you the ability to make the enemies explode when killed, including the objects around them. This ring can be handy when farming for resources or facing Dangerous enemies in the Mines and the Cavern.

Magma Sprites

Check off the latest and probably the last Monster Eradication Goal on the list by killing 150 Magma Sprites. Magma Sprites are enemies that were added in the 1.5 update. Magma Sprites and their stronger versions, Magma Sparks, can be seen in the Volcano Dungeon, and they sometimes attack in groups and swoop at you without cease. 

If you eliminate 150 Magma Sprites, you will obtain Marlon’s Phone Number. Use it to dial Marlon’s number to recover the items you lose every time you pass out in caverns or dungeons. You can purchase a phone from Robin’s Carpenter Shop if you have not got one.

Each time you receive a prize item from completing a task, you can unlock and purchase them from Marlon’s shop in the Adventurer’s Guild. Finishing all Monster Eradication Goals will not only provide you with a handful of rewards, but you will also be granted with the Protector of the Valley achievement.

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