Terraria Boss Order: All 33 Bosses in Progression Order (1.4.5)

Name: Terraria Boss Order: All 33 Bosses in Progression Order (1.4.5)
Uploaded: 2026-09-27T00:00:00.000Z
Description: The recommended Terraria boss order from King Slime to Moon Lord, with Classic/Expert/Master HP for every boss and which fights are actually optional.

The recommended Terraria boss order from King Slime to Moon Lord, with Classic/Expert/Master HP for every boss and which fights are actually optional.

9/27/2026 1.4.5.8 Terraria Wiki Team 4 min read

FAQ

How many bosses are in Terraria?

Terraria has 33 bosses in total as of 1.4.5: 8 pre-Hardmode bosses, 10 Hardmode bosses, 14 event bosses, and Mechdusa, which only exists on the Get fixed boi secret seed.

Which Terraria bosses are optional?

King Slime, Queen Bee, Deerclops, Queen Slime, Duke Fishron, and Empress of Light are all optional — they drop strong loot but nothing required to advance progression. Every event boss and Mechdusa are optional too.

What boss should I fight first in Terraria?

The Eye of Cthulhu is designed as the first boss — it can spawn naturally once you have 200 health, 11 defense, and four town NPCs. King Slime is technically weaker and fine to farm first, but it is optional and drops no progression items.

What is the recommended boss order in Terraria?

Follow this progression line for the smoothest run. Bosses marked (optional) can be skipped without blocking anything:

Pre-Hardmode: King Slime (optional) → Eye of Cthulhu → Eater of Worlds (Corruption) or Brain of Cthulhu (Crimson) → Queen Bee (optional) → Skeletron → Deerclops (optional) → Wall of Flesh — defeating it permanently converts the world to Hardmode.

Hardmode: Queen Slime (optional) → The Twins / The Destroyer / Skeletron Prime (any order) → Plantera → Golem → Duke Fishron (optional) → Empress of Light (optional) → Lunatic Cultist → the four Celestial Pillars → Moon Lord.

How much HP does each pre-Hardmode boss have?

All values below are verified against the current 1.4.5.x data. Expert and Master modes raise boss health and damage sharply — pick your mode honestly.

Boss	Classic	Expert	Master	Required?
King Slime	2,000	2,800	3,570	Optional
Eye of Cthulhu	2,800	3,640	4,641	Effectively first
Eater of Worlds	10,050	15,120	19,296	Corruption worlds
Brain of Cthulhu	1,250	2,125	2,709	Crimson worlds
Queen Bee	3,400	4,760	6,069	Optional
Deerclops	7,000	11,900	15,172	Optional
Skeletron	4,400	8,800	11,220	Required (Dungeon)
Wall of Flesh	8,000	11,200	14,280	Required (Hardmode)

The Brain of Cthulhu has the lowest boss HP in the game — 1,250 on the brain itself, though its Creepers add another 2,000 to burn through first — and it is one of the very few bosses that still takes knockback. The Eater of Worlds’ total is split across dozens of segments, so piercing weapons shred it.

How much HP does each Hardmode boss have?

Boss	Classic	Expert	Master	Required?
Queen Slime	18,000	28,800	36,720	Optional
The Twins	43,000 total	64,500	82,238	Required (mech)
The Destroyer	80,000	120,000	153,000	Required (mech)
Skeletron Prime	28,000 head	42,000	53,550	Required (mech)
Plantera	30,000	42,000	53,550	Required
Golem	60,000 total	90,000	114,749	Required
Duke Fishron	60,000	78,000	99,450	Optional
Empress of Light	70,000	98,000	124,950	Optional
Lunatic Cultist	32,000	48,000	61,200	Required
Moon Lord	145,000	217,500	277,311	Final boss

Note the Twins list combined HP for both eyes (Retinazer 20,000/30,000/38,250 plus Spazmatism 23,000/34,500/43,988), and Skeletron Prime shows head HP — its four limbs raise the total to 59,000/88,500/112,836, but only the head must die.

Which bosses actually gate progression?

Only a handful of fights are hard progression gates:

Eater of Worlds / Brain of Cthulhu — their Shadow Scale / Tissue Sample drops unlock the tier of gear needed for the Dungeon.
Skeletron — killing it removes the Dungeon Guardians and grants real Dungeon access.
Wall of Flesh — its death permanently converts the world to Hardmode. There is no going back.
All three mechanical bosses — defeating them spawns Plantera’s Bulbs in the Underground Jungle.
Plantera — drops the Temple Key for the Jungle Temple and slows evil biome spread.
Golem — its death spawns the Lunatic Cultists at the Dungeon entrance.
Lunatic Cultist — starts the Lunar Events and Celestial Pillar chain.
Moon Lord — the end of the line; kills the run’s final boss and unlocks the crafting tier for the Zenith.

Event bosses (Pumpkin Moon, Frost Moon, Old One’s Army, Pirate and Martian invasions) and the secret-seed boss Mechdusa sit entirely outside this chain.

What gear should I have before each boss?

The short version: match your armor to the ore tier the previous boss unlocked. Eater/Brain tier (Shadow or Crimson armor) carries you through Skeletron; Molten armor is the pre-Hardmode ceiling for the Wall of Flesh. In Hardmode, break altars for ore progression, then fight one mechanical boss in Palladium/Cobalt-tier gear, upgrade with Hallowed Bars, and take Plantera in Hallowed or Chlorophyte. Our class setups guide maps the armor, weapon, and accessory choice for every stage — and the beginner guide covers everything before your first boss.