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The Tremor Mod expands on the number of bosses that can be challenged throughout the game, each featuring memorable, challenging AI and unique, powerful drops. Most require the use of boss summoning items in order to spawn, but others have more unique prerequisites. The initial defeat of bosses (both vanilla and Tremor) typically results in some form of change within the world, be it new enemies appearing or a meteor crash, indicated by status messages to direct players towards the new content. The mod currently adds twenty four new boss encounters.

In Expert Mode, bosses drop Treasure Bags which contain powerful Expert-exclusive items in addition to their normal drops. However, many bosses also have new and unique attacks providing players with new challenges to surmount if they hope to reap the rewards.

Most bosses in Tremor are designed to be about the same difficulty as those of vanilla Terraria, presenting a large challenge to the unprepared but are not required to progress through the vanilla game's content. To make up for this, they often drop more powerful equipment and open up new tiers of progression.

After the player has killed the Moon Lord, a whole new level of progression is unlocked, containing several very powerful bosses that will push the game's mechanics to their limits. These serve to test the player's skill and game knowledge and allow for additional tiers of weapons and items beyond what Terraria's endgame has to offer.

Unprepared players will find these bosses to be spectacularly difficult, but if precautions are taken and proper preparations are made, all of them can be defeated at their respective level of progression. Players are advised to make use of arenas, potions and any other kind of aid they can muster before confronting these challenging bosses.

Pre-Hardmode Bosses

The Rukh

The Rukh.png

Rukh Trophy.png Desert Crown.png The Rukh is an enormous vulture with 2,500 health (3,125 in Expert Mode). While it is intended to be one of the first bosses, its intimidating size and speed can easily overwhelm an unprepared player. It becomes a greater threat in Expert Mode, where various vultures and sandnados join it in the fight, and it is able to fire a barrage of sand bolts.

The Rukh drops weapons themed around cacti and sand, it also drops the Desert Claymore in Expert Mode, a magic weapon which fires a desert blade downwards.

Can be summoned using Desert Crown.png Desert Crown

Tiki Totem

Tiki Totem (boss).png

Mysterious Drum.png Tiki Totem Trophy.png The Tiki Totem is a ritualistic idol with 1,500 health (3,125 in Expert Mode) fought in the Jungle biome. While it spawns initially invulnerable, it begins to attack once the Tiki Souls are killed, jumping at the player. It summons many Tiki Warriors and Tiki Sorcerers, and the Souls of Anger, Happiness and Indifference after it is defeated.

The Tiki Totem drops Jungle-themed tools and materials related to the Jungle. It drops the Mysterious Skull accessory in Expert Mode, which increases minion damage.

Can be summoned using Mysterious Drum.png Mysterious Drum

Evil Corn

Evil Corn.png

Cursed Popcorn.png Evil Corn Trophy.png

Evil Corn is a mutated corn. It flies after the player, damaging them with the leaves surrounding it. The boss can enter a phase where it becomes invulnerable by hiding itself in its own leaves and heals whenever it is hit and then burrows underground and jump at the player's position to attack. While it is in a vulnerable state, it can drop popcorn when it is attacked. Popcorn restores 1 health.

Can be summoned using Cursed Popcorn.png Cursed Popcorn.

Ancient Dragon

Ancient Dragon.png

The Ancient Dragon is a powerful dragon with 3,100 health (3,410 in Expert Mode) fought in the Ruins minibiome. It has a very similar AI to that of a normal worm, and takes knockback. The Ancient Dragon will simply burrow around in Normal Mode, but when it reaches 50% of its health, when hit, each segment has a chance to detach from its body and become a Mini Dragon. In Expert Mode, the fight becomes a lot harder as it can inflict the Stoned debuff for 4 seconds.

Can be summoned in the Ruins minibiome at the Ruins Altar with the Rusty Lantern.png Rusty Lantern

Storm Jellyfish

Storm Jellyfish.png

The Storm Jellyfish is a large, stormy Jellyfish that has 2,800 (5,600 in Expert Mode) health fought anywhere. It charges at the player, periodically shooting slow-moving bolts of electricity that inflict Electrified, and summoning Flying Jellyfish every so often. In Expert Mode, it gains nothing more than extra health.

It drops Lightning and Jellyfish-themed items and in Expert Mode, as an exclusive drop, it drops the Enchanted Hourglass.

Can be summoned using Storm Jelly.png Storm Jelly

Fungus Beetle

Fungus Beetle.png

The Fungus Beetle is a frost beetle corrupted by Glowing Mushrooms. It flies around the screen, summons Great Fungus Bugs that make it invulnerable and releases spores.

Can be summoned using Mushroom Crystal.png Mushroom Crystal.

Heater of Worlds

Heater of Worlds.png

The Heater of Worlds is a molten eater of worlds. It charges the player with its head and shoots flaming bolts that burn the Player from contact from every body part. The Heater of Worlds can also summon Magma Leech minions that act like worms. In Expert Mode, the boss also inflicts the On Fire! debuff when it hits the player.

Can be summoned using Molten Heart.png Molten Heart.

Hardmode Bosses

Alchemaster

Alchemaster.png

The Alchemaster is a corrupted alchemist. It floats while taking potshots at the player with flasks.

Can be summoned using Ancient Mosaic Ancient Mosaic.png .

Motherboard

Motherboard.png

The Motherboard is a Mechanical Brain of Cthulhu. It shoots out laser beams and summons drones to fight. The Motherboard also shares similar attack patterns to the Brain of Cthulhu. It replaces the Destroyer in Hardmode if the player is in a crimson-infected world.

Can be summoned using Mechanical Brain Mechanical Brain.png .

Pixie Queen

Pixie Queen.png

The Pixie Queen is the guardian of the hallow. She is a boss that can fly through blocks and shoot beams out in the sky. She can summon pixies in the boss fight.

Can be summoned using Pixie in a Jar.png Pixie in a Jar.

Frost King

Frost King.png

The Frost King is the king of the Glacier biome. The boss will float around you, and shoots ice at you which inflicts the Chilled debuff.

Can be summoned using Frost Crown.png Frost Crown.

Wall of Shadows

Wall of Shadows.png

The Wall of Shadows is a shadowy abomination. Like the Wall of Flesh, it spawns with Shadow Hands similarly to The Hungry. It can also shoot lasers from one of its eyes.

When the Wall of Shadows reaches its second form, it fires faster, fires Shadow Beams, and spawns Shadow Steeds.

Despite its theme, it can be summoned in corruption or crimson world alike.

Can be summoned using Shadow Relic.png Shadow Relic.

Cog Lord

Cog Lord.png

The Cog Lord is one of the Steampunker's inventions that went rogue. It acts like Skeletron Prime and has 2 hands. It shoots rockets, X-like lasers, shoots rockets from the sky and summons support drones after losing health.

Can be summoned using Artifact Engine.png Artifact Engine.

Mothership

Mothership.png

Mothership is a cybernetic ship that has been angered. In its first phase, it shoots purple lasers, and also floats around at the player while attempting to ram them. In its second phase, it creates laser disks and charges more rapidly.

Can be summoned at night using Advanced Circuit.png Advanced Circuit.

Cyber King

Cyber King.png

The Cyber King is a cybernetic saw that is on a rampage. It floats around shooting fast moving red circles, summons Cybermites which rush at the player and shoots big, red, slowly moving lasers.

The Cyber King spawns as soon the Mothership is defeated.

Tremode Bosses

Paradox Titan

Paradox Titan.png

The Paradox Titan is a mutant time space creature. It attacks by summoning other enemies to attack the player, as well as teleporting towards the player and attempting to ram them.

It fights the player after getting to 98% during the Paradox Cohort Event, which can be summoned using Ancient Watch.png Ancient Watch.

The Dark Emperor

The Dark Emperor.png

The Dark Emperor is the spirit of king slime embedded deep in shadow. It attacks by summoning dark servants to attack the player and attempting to leap on them. In it's second phase it shoots dark servants directly at the player.

Can be summoned using Emperor Crown.png Emperor Crown.

Brutallisk

Brutallisk.png

The Brutallisk is a royal dragon-like snake. It attacks by stirring up tornadoes, summoning naga and quetzolcoatl and breathing fire at the player.

Minimap Icon - Brutallisk Map.png

Can be summoned using Royal Egg.png Royal Egg.

Space Whale

Space Whale.png

The Space Whale is an interdimensional whale. It attacks by summoning meteors, charging at the player and spinning.

Can be summoned using Cosmic Krill.png Cosmic Krill.

The Trinity

The Trinity.png

The Trinity is a trio of interdimensional creatures each representing virtues. Each of them can fly through blocks and shoot projectiles torwards the player.

The Doom is the one with the most health. Afterwards comes The Hope, and then The Truth.

Can be summoned using Stone of Knowledge.png Stone of Knowledge.

Andas

Andas.png
True Andas.png

Andas is an infernal demon that has 280,000 health (460,000 in Expert Mode) (total). It attacks by charging at the player and summoning minions. It has a second phase if you fight it during the day.

Can be summoned using Inferno Skull.png Inferno Skull.

Boss Progression

Pre-Hardmode
Icon Name
King Slime.png
King Slime
Eye of Cthulhu.png
Eye of Cthulhu
The Rukh.png
The Rukh
Eater of Worlds.png
Brain of Cthulhu.png
Eater of Worlds or Brain of Cthulhu
Tiki Totem (boss).png
Tiki Totem (boss)
Evil Corn.png
Evil Corn
Storm Jellyfish.png
Storm Jellyfish
Ancient Dragon.png
Ancient Dragon
Queen Bee.png
Queen Bee
Skeletron.png
Skeletron
Heater of Worlds.png
Heater of Worlds
Fungus Beetle.png
Fungus Beetle
Wall of Flesh.png
Wall of Flesh
Hardmode
Icon Name
Alchemaster.png
Alchemaster
The Destroyer.png
Motherboard.png
The Destroyer or Motherboard
Skeletron Prime.png Skeletron Prime
The Twins.png
The Twins
Pixie Queen.png
Pixie Queen
Plantera.png
Plantera
Frost King.png
Frost King
Wall of Shadows.gif
Wall of Shadows
Golem.png
Golem
Cog Lord.png Cog Lord
Mothership.png
Cyber King.png
Mothership and Cyber King
Duke Fishron.png
Duke Fishron
Lunatic Cultist.png Lunatic Cultist
Nova Pillar.png Nova Pillar
Moon Lord.png
Moon Lord
Tremode
Icon Name
Paradox Titan.png
Paradox Titan
The Dark Emperor.png
The Dark Emperor
Brutallisk.png
Brutallisk
Space Whale.png
Space Whale
The Trinity.png
The Trinity
Andas.png
Andas
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