No missable achievements (plus 117 unknown)
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Chop down your first tree.
Mine your first nugget of ore with a pickaxe.
Survive your character's first full night.
Build a house suitable enough for your first town NPC, such as the guide, to move into.
Equip armor in all three armor slots: head, chest, and feet.
Discover a golden chest underground and take a peek at its contents.
Obtain your first hammer via crafting or otherwise.
Craft a mana crystal out of fallen stars, and consume it.
Discover and smash your first heart crystal underground.
Obtain an anvil made from iron or lead.
Become a victim to a nasty underground trap.
Obtain a boss-summoning item.
Survive a blood moon, a nocturnal event where the rivers run red and monsters swarm aplenty.
Defeat the Eye of Cthulhu, an ocular menace who only appears at night.
Equip your first grappling hook.
Throw a yoyo.
Spelunk deep enough to reach the molten underworld.
Equip armor or vanity clothing in all three social slots.
Using explosives or your trusty hammer, smash a Shadow Orb or Crimson Heart in the evil parts of your world.
Stumble into a spider cavern in the underground.
Triumph over a goblin invasion, a ragtag regiment of crude, barbaric, pointy-eared warriors and their shadowflame sorcerers.
Travel a total of 26.2 miles on foot.
Survive a long fall with just a sliver of health remaining.
Defeat Skeletron, the cursed guardian of the dungeon.
Defeat King Slime, the lord of all things slimy.
Equip a pair of wings.
You can only go down from here!
Equip a mount.
Steal a key from dungeon's undead denizens, and unlock one of their precious golden chests.
Destroy a total of 10,000 tiles.
Defeat an enemy by running it over with a minecart.
Discover a large bee's hive deep in the jungle.
Defeat the Wall of Flesh, the master and core of the world who arises after a great, burning sacrifice.
Unleash the ancient spirits of light and darkness across your world, enabling much stronger foes and showering the world with dazzling treasures (and rainbows!).
Defeat the Queen Bee, the matriarch of the jungle hives.
Survive the slime rain, where gelatinous organisms fall from the sky in droves.
Smash a demon or crimson altar with a powerful, holy hammer.
Kill the groom.
Defeat the Brain of Cthuhlu, an enourmous demon brain which haunts the creeping crimson.
Mine a powerful ore that has been newly blessed upon your world.
Defeat the Eater of Worlds, a massive worm whom dwells in the corruption.
Kill a nymph.
Consume a life fruit, which grows in the thick of subterranean jungle grass.
Obtain a rare treasure from a difficult monster in the dungeon.
Triumph over a pirate invasion, a group of pillagers from the sea out for your booty... and your life!
Obtain a minishark.
Defeat the three nocturnal mechanical menaces: the Twins, the Destroyer, and Skeletron Prime.
Survive a solar eclipse, a day darker than night filled with creatures of horror.
Attain maximum health and mana possible without accessories or buffs.
Defeat Plantera, the overgrown monstrosity of the jungle's depths.
Mine chlorophyte, an organic ore found deep among the thickest of flora.
Defeat Golem, the stone-faced ritualistic idol of the lihzahrd tribe.
Build or encounter a glowing mushroom field above the surface.
Defeat the Ancient Cultist, fanatical leader of the dungeon coven.
Craft a molten pickaxe using the hottest of materials.
Obtain a Terra Blade, forged from the finest blades of light and darkness.
Defeat the Moon Lord.
Triumph over a martian invasion, when beings from out of this world come to scramble your brains and probe you in uncomfortable places.
Breach the impenetrable walls of the jungle temple.
Defeat the four celestial towers of the moon.
Obtain the Terrarian.
Complete your 1st quest for the angler.
Build a house in a mushroom biome and have Truffle move in.
Unlock one of the dungeon's large, mysterious chests with a special key.
Craft a drax or pickaxe axe using hallowed bars, and the souls of the three mechanical bosses.
Equip a dye in every possible dye slot.
You have reached the bottom of the World!
Defeat Duke Fishron, mutant terror of the sea.
Kill Doctor Bones.
Spend over 1 gold being treated by the nurse.
Defeat every boss in Terraria.
There are actually 15 bosses, but you only need 14 for the achievement. This achievement was glitched in 2015/2016 - but works ok now.
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Triumph over the frost legion, a festive family of maniacal snowman mobsters.
Do battle against the Twins, the Destroyer, and Skeletron Prime simultaneously and emerge victorious.
Obtain a golden fishing rod.
Reach the 15th wave of a pumpkin moon, where evil lurks among the autumn harvest.
Obtain a rainbow rod.
Defeat every type of slime there is!
Command nine summoned minions simultaneously.
Have all possible town NPCs living in your world.
Craft your first work bench.
Complete your 10th quest for the angler.
Reach the 15th wave of a frost moon, where the festive season quickly degrades into madness.
Fire a Bee Gun while wearing a full set of Bee Armor.
Fire a rainbow gun while riding on a unicorn.
Complete your 25th quest for the angler.
Complete your 50th quest for the angler.
Complete a grand total of 200 quests for the angler.