This Terraria Hardmode guide comes down to one first move: after the Wall of Flesh dies, grab its drops, smash Altars with the Pwnhammer and mine the new ores, then turn those ores into better gear before you go looking for trouble. Hardmode starts the first time the Wall of Flesh dies, and you can't switch it off again. As of November 2026 the PC version is 1.4.5.8, and everything below is written for that.
Is it actually hard? At the start, yes. Enemies have many times the health and damage they had before, so your old weapons stop working and you're underequipped for a while. The fix is mostly gear: new ore armor, a reforge and a stack of potions, plus some care about where you mine.
How to prepare for Hardmode before the Wall of Flesh
Do this before you fight the Wall of Flesh, not after:
- Back up the world. Hardmode is one-way. Getting out needs a third-party map editor, so a backup copy is your only undo.
- Craft a Molten Pickaxe. You need it for the first Hardmode ore, and if you can't mine Hellstone later, you'll be blowing it up with Dynamite.
- Set up fast travel to the caverns. A Cavern Pylon or a Hellevator saves you a lot of walking once the world turns dangerous.
- Stock potions. Spelunker, Hunter, Featherfall and Mining for ore trips, plus Ironskin and Regeneration for boss fights. Farm the herbs now.
- Keep your summon materials. Don't toss Iron or Lead bars, Bones, Lenses, Vertebrae or Rotten Chunks. The mechanical boss summons use them.
- Check the Aether and Shimmer. If you haven't found them, do. Shimmer is handy in Hardmode: you can shimmer old wings back into Souls of Flight, and shimmer Titanium ore into Adamantite.
Kill the Wall with your best pre-Hardmode setup, then pick up what it drops quickly. Items can fall into lava if your inventory is full. The Pwnhammer is guaranteed.
What changes when Hardmode starts
You'll get the message "The ancient spirits of light and dark have been released." Two diagonal stripes then cut through the world in a V, from the top of the map to the bottom of the Underworld. One turns everything it touches into Hallow, the other into your world's Corruption or Crimson. It takes a while to finish, depending on world size.
- New biomes. Underground Corruption or Crimson, Hallow, and Underground Hallow. The Hallow's Unicorns and Pixies look cute and hit fast and hard.
- Tougher enemies everywhere. In Expert, a Blue Slime goes from 50 HP to 274. Slow, hard-hitting weapons beat fast, low-damage ones because of enemy defense.
- The Underworld and Dungeon stay quiet for now. The Underworld gets no stronger enemies until you beat a mechanical boss, and the Dungeon gets none until Plantera. Both are good places to find the Wizard if you haven't yet.
- Mechanical bosses and Pirate Invasions can show up on their own once you smash your first Altar.
What to do first in Hardmode: the first-hour checklist
- Smash Altars with the Pwnhammer. Each of the first three you break creates a new ore: Cobalt or Palladium, then Mythril or Orichalcum, then Adamantite or Titanium. After that the cycle repeats. The third ore is the best, so smashing 9 or 12 Altars is a good target. There's no downside to more.
- Mine each ore with the right pickaxe. Cobalt and Palladium need a Molten Pickaxe. Mythril and Orichalcum need a Cobalt or Palladium pick (45 Cobalt or 54 Palladium to make it). Adamantite and Titanium need a Mythril or Orichalcum pick (100 Mythril or 120 Orichalcum). About 300 of the top-tier ore covers a full armor set and a good weapon.
- Mine in plain caverns first. The Underground Jungle and Underground Desert are extremely lethal this early. Spelunker and Mining potions help.
- Craft a Hardmode anvil and armor. The Orichalcum or Mythril bars give you the anvil, and your first real armor set comes from there.
- Get wings. More on that below.
- Reforge your best weapon and accessories. It's quick, and it helps every fight from here on.
Until your new gear is ready, lean on the strongest pre-Hardmode weapons you have. Night's Edge, Sunfury and Flamarang work for melee, Molten Fury, Hellwing Bow and Phoenix Blaster for ranged, Flower of Fire and Flamelash for magic, and Spinal Tap or Imp Staff for summoners. Not sure what to build around? My Terraria classes guide covers the four.
Skipping the Altars is possible, but it's not worth it. Hardmode crates can drop ores too, but slowly, and crates you opened before Hardmode don't give Hardmode materials.
Wings and Souls of Flight
Wings are the main staple of Hardmode movement, and they cancel fall damage. Every pair needs 20 Souls of Flight plus something else, and those souls drop from Wyverns in space. A Water Candle from the Dungeon raises the spawn rate, and you'll need about 3 to 4 Wyverns for a pair (2 in Expert).
Quick option: Angel or Demon Wings, from 10 Feathers and 15 Souls of Light or Night. Better ones are Fairy Wings (99 Pixie Dust, and the most reliable to farm), Frozen Wings (an Ice Feather) and Harpy Wings (a Giant Harpy Feather). I've written up every pair in the Terraria wings guide.
Souls of Night and Light, and early farming
Souls drop in the Underground evil biome and the Underground Hallow. Each biome also has its own material: Cursed Flames in Underground Corruption, Ichor in Underground Crimson, Crystal Shards in the Underground Hallow. Watch for Biome Mimics down there, which are dangerous. Good early events:
- Sandstorm: Sand Elementals drop what you need for Forbidden armor.
- Ice Golem in rain in the Snow biome: Frost Cores for Frost armor.
- Pirate Invasion: a lot of money.
- Queen Slime: optional, summoned with a Gelatin Crystal in the Underground Hallow.
Your housing matters here too. If NPCs keep leaving, check the NPC happiness guide. The Steampunker, who sells the Clentaminator, comes after your first mechanical boss.
How to stop the Hallow and the evil spreading
Corruption, Crimson and Hallow all spread much faster in Hardmode. The Hallow doesn't evict NPCs, but evil biomes do. Surface tiles update about every 140 seconds on average and underground ones about every 830, so the surface is where you'll lose ground fast.
- A spreading tile converts anything corruptible within 3 tiles, so a one-block wall does nothing. A barrier needs to be at least 3 tiles of open air or non-corruptible blocks.
- Thorny bushes can grow across a gap, so even 3-wide air isn't a guarantee.
- Sunflowers block conversion within 2 tiles of them. Two at each end of an evil patch, or a 3-wide vertical tunnel, will contain it.
You mostly need to protect NPC towns and the Jungle. Killing Plantera halves the spread speed, and the Clentaminator makes cleanup easy.
Hardmode progression, phase by phase
Phase 1: before the mechanical bosses
Goal: a full ore armor set, wings, reforged gear and a stock of potions. The three mechanical bosses are much stronger versions of the Eye of Cthulhu (the Twins), the Eater of Worlds (the Destroyer) and Skeletron (Skeletron Prime). You summon them at night with a Mechanical Eye, Worm or Skull, and each has to die in the same night or it leaves. Skeletron Prime enrages if you let it get that far. For which one to fight first and how, use the Terraria boss order guide.
Phase 2: the mechanical bosses
Goal: all three dead. The first kill brings the Steampunker, Life Fruit in the Underground Jungle, natural Solar Eclipses and a tougher Underworld. All three drop Hallowed Bars, and the first Drax or Pickaxe Axe needs those bars plus a soul from each boss. That tool is what mines Chlorophyte, which appears in the Underground Jungle when Hardmode starts.
Phase 3: Plantera
Goal: Plantera down. Once all three mechanical bosses are dead, the jungle grows restless, and breaking a Plantera's Bulb in the Underground Jungle summons her. Killing her halves the spread speed, makes Dungeon enemies harder, brings the Cyborg, drops the Temple Key and lets you open biome chests in the Dungeon with Biome Keys. The Pumpkin Moon and Frost Moon also open up once you've got Ectoplasm. Post-Plantera Chlorophyte Bars lead to Shroomite armor (ranged) and Spectre bars (magic). Turtle and Beetle armor are the melee options.
Phase 4: Golem
Goal: the Lihzahrd Temple and Golem. The Temple Key opens the temple, and you summon Golem with Lihzahrd Power Cells at the Lihzahrd Altar. Beating him unlocks Martian Madness, Old One's Army tier 3 and the Lunatic Cultist. Duke Fishron and the Empress of Light are optional extras that generally want post-Golem gear. The Empress's daytime attacks are instant kills, so don't pick that fight by day.
Phase 5: Lunar Events and the Moon Lord
Goal: the finish. Beat the Lunatic Cultist at the Dungeon entrance, clear the four Celestial Pillars and the Moon Lord arrives, or you can call him with a Celestial Sigil. He's the final boss. Luminite and Lunar Fragments from this stage build the endgame gear. Thinking about mods for round two? The best Terraria mods has the picks.
Which boss first, and is it worth rushing?
The mechanical bosses can be fought in any order, and the wiki doesn't set one. Queen Slime is optional but makes a good warm-up. I'd take the first hour slowly: gear up before you light up the night with a mech summon, and take the boss order guide with you.