Full list of all 115 Terraria achievements. It takes around 200 hours to unlock all of the achievements in the base game on Windows.
The base game contains 88 achievements, and there are 3 DLC packs containing 27 achievements.
Kill Doctor Bones.
Reach the 15th wave of a pumpkin moon, where evil lurks among the autumn harvest.
Survive a solar eclipse, a day darker than night filled with creatures of horror.
Build or encounter a glowing mushroom field above the surface.
Build a house in a mushroom biome and have Truffle move in.
Defeat the four celestial towers of the moon.
Survive a blood moon, a nocturnal event where the rivers run red and monsters swarm aplenty.
Defeat Duke Fishron, mutant terror of the sea.
Defeat every boss in Terraria.
Breach the impenetrable walls of the jungle temple.
Unlock one of the dungeon's large, mysterious chests with a special key.
Defeat Plantera, the overgrown monstrosity of the jungle's depths.
Command nine summoned minions simultaneously.
Fire a rainbow gun while riding on a unicorn.
Do battle against the Twins, the Destroyer, and Skeletron Prime simultaneously and emerge victorious.
Triumph over a pirate invasion, a group of pillagers from the sea out for your booty... and your life!
Triumph over the frost legion, a festive family of maniacal snowman mobsters.
Obtain a rainbow rod.
Fire a Bee Gun while wearing a full set of Bee Armor.
Mine a powerful ore that has been newly blessed upon your world.
Smash a demon or crimson altar with a powerful, holy hammer.
Unleash the ancient spirits of light and darkness across your world, enabling much stronger foes and showering the world with dazzling treasures (and rainbows!).
Craft a molten pickaxe using the hottest of materials.
Mine chlorophyte, an organic ore found deep among the thickest of flora.
Defeat the Brain of Cthuhlu, an enourmous demon brain which haunts the creeping crimson.
Using explosives or your trusty hammer, smash a Shadow Orb or Crimson Heart in the evil parts of your world.
The only way is up!
Discover and smash your first heart crystal underground.
Kill pinky.
Defeat Golem, the stone-faced ritualistic idol of the lihzahrd tribe.
Equip a dye in every possible dye slot.
Obtain a golden fishing rod.
Defeat the three nocturnal mechanical menaces: the Twins, the Destroyer, and Skeletron Prime.
Attain maximum health and mana possible without accessories or buffs.
Obtain a Terra Blade, forged from the finest blades of light and darkness.
Obtain the Terrarian.
Defeat the Moon Lord.
Spend over 1 gold being treated by the nurse.
Defeat the Ancient Cultist, fanatical leader of the dungeon coven.
Obtain a rare treasure from a difficult monster in the dungeon.
Build a house suitable enough for your first town NPC, such as the guide, to move into.
Discover a golden chest underground and take a peek at its contents.
Destroy a total of 10,000 tiles.
Craft a drax or pickaxe axe using hallowed bars, and the souls of the three mechanical bosses.
Obtain a minishark.
Equip a pair of wings.
Defeat the Wall of Flesh, the master and core of the world who arises after a great, burning sacrifice.
Complete your 1st quest for the angler.
Defeat the Queen Bee, the matriarch of the jungle hives.
Survive a long fall with just a sliver of health remaining.
Obtain a boss-summoning item.
Steal a key from dungeon's undead denizens, and unlock one of their precious golden chests.
Defeat Skeletron, the cursed guardian of the dungeon.
Kill Tim.
Defeat an enemy by running it over with a minecart.
Travel a total of 26.2 miles on foot.
Defeat the Eater of Worlds, a massive worm whom dwells in the corruption.
Discover a large bee's hive deep in the jungle.
You can only go down from here!
Throw a yoyo.
Equip armor or vanity clothing in all three social slots.
Defeat the Eye of Cthulhu, an ocular menace who only appears at night.
Equip your first grappling hook.
Equip a mount.
Triumph over a goblin invasion, a ragtag regiment of crude, barbaric, pointy-eared warriors and their shadowflame sorcerers.
Spelunk deep enough to reach the molten underworld.
Kill a nymph.
Stumble into a spider cavern in the underground.
Defeat King Slime, the lord of all things slimy.
Become a victim to a nasty underground trap.
Obtain an anvil made from iron or lead.
Equip armor in all three armor slots: head, chest, and feet.
Survive your character's first full night.
Obtain your first hammer via crafting or otherwise.
Mine your first nugget of ore with a pickaxe.
Chop down your first tree.
Craft a mana crystal out of fallen stars, and consume it.
Consume a life fruit, which grows in the thick of subterranean jungle grass.
Triumph over a martian invasion, when beings from out of this world come to scramble your brains and probe you in uncomfortable places.
Reach the 15th wave of a frost moon, where the festive season quickly degrades into madness.
Survive the slime rain, where gelatinous organisms fall from the sky in droves.
Have all possible town NPCs living in your world.
Defeat every type of slime there is!
Kill the groom.
Complete your 10th quest for the angler.
Complete your 25th quest for the angler.
Complete your 50th quest for the angler.
Complete a grand total of 200 quests for the angler.
Craft your first work bench.
You were so preoccupied with whether or not you could open the chest that you didn't stop to think if you should.
Encounter a fairy.
Defeat the Empress of Light, responsible for all those flashy lights and glitter.
Defeat Queen Slime, giving the coup-de-grace to the sovereign of all that jiggles.
Defeat the Dreadnautilus, murderous mollusk lurking beneath the surface of the sanguine seas.
Repel the strongest forces the Old One's Army can muster.
Obtain the Zenith, the culmination of a journey forged into the ultimate sword.
Obtain the Terraspark Boots, forged from the finest boots of fire and ice.
Fly a kite on a windy day.
Enter a misty graveyard filled with the surly dead.
Drop a lure in a pool of lava for a pre-fried haul!
Trick a gnome into turning into stone!
Meet with a tenant who's as happy as they possibly can be!
Deliver headpats to the town pet.
What you're celebrating doesn't matter, just throw a party already!
Defeat Deerclops, the chilly one-eyed monstrosity from a foreign land.
Obtain Golden Delight, the highest quality meal made from the highest quality . . . ingredients.
Delay death from drowning by drinking water. It doesn't make much sense, but you did what you had to do.
Obtain the Cell Phone. You'll never leave home without it again.
Obtain the Ankh Shield, the finest protection from unpleasant maladies and ailments.
Invoked the wrath of the God of Torches, and survived long enough to earn its blessing.
Some very special seeds can lead to unique and rewarding experiences. Can you find one?
Find all of the Slime Pets and have them move in!
Shimmer an item into another item. What other transmutations can you find?
Completely purify all Corruption, Crimson, and Hallow from your world, until the Dryad is satisfied!
Fly a Kwad Racer into outer space.