Full list of all 138 Shovel Knight: Treasure Trove achievements.
The base game contains 118 achievements, and there is 1 DLC pack containing 20 achievements.
Acquire all armor, heirlooms, fancy things, and upgrades. (King Knight)
Finish New Game Plus. (King Knight)
Find and complete all stages and stage paths, and defeat all wandering travelers. (King Knight)
Collect all Merit Medals. (King Knight)
Clear all 4 houses of Joustus, and win the final battle... (King Knight)
Defeat every possible Joustus opponent. (King Knight)
Finish a Joustus Judge stage without dying or collecting any food or health hearts. (King Knight)
Lose a unique card, then win it back! (King Knight)
Commission a finished portrait! (King Knight)
Use only heirlooms to defeat any boss! (King Knight)
Find King Knight's secret room! (King Knight)
Use each one of Chester's Cheat Cards. (King Knight)
In a Joustus match with more than one gem, win by claiming every gem. (King Knight)
Finish the game. (King Knight)
Complete the game in fewer than 25 stages. (King Knight)
Finish the game without acquiring any heirlooms, health upgrades, or vigor upgrades. Armors are ok! (King Knight)
Beat the game within 1 hour and 30 minutes. (King Knight)
Finish a stage and jump fewer than 10 times. (King Knight)
Complete any Order of No Quarter recruit stage using your standing slash 10 times or fewer. Dash Slashes are ok! (Specter Knight)
Finish New Game Plus. (Shovel Knight)
Obtain all song scrolls. (Shovel Knight)
Hit enemies with a reflected projectile 30 times. (Shovel Knight)
Don't collect any gold for an entire Order of No Quarter stage. (Shovel Knight)
Destroy 5 enemies within 5 seconds using the Chaos Spheres. (Shovel Knight)
Defeat 3 enemies with one Throwing Anchor. (Shovel Knight)
Run over 5 enemies using the same Mobile Gear. (Shovel Knight)
Defeat an enemy by using each relic. (Shovel Knight)
Defeat an enemy with the Flare Wand from more than 25 blocks away. (Shovel Knight)
Purchase or unlock all relics, equipment, and upgrades. (Shovel Knight)
Defeat 3 enemies using the Propeller Dagger without touching the ground. (Shovel Knight)
Defeat 5 foes at once using the Booming Horn. (Shovel Knight)
Defeat all of the wandering travelers. (Shovel Knight)
Listen to all of Croaker's puns. (Shovel Knight)
Hang in the air for more than 4 seconds using the Dust Knuckles. (Shovel Knight)
Solve the woes of the Hall of Champions. (Shovel Knight)
Collect 2000 worth of gold lying on spikes, while using the Phase Locket. (Shovel Knight)
Sample each of the Troupple King's ichors. (Shovel Knight)
Emerge unscathed from a battle with any Knight of the Order of No Quarter. (Shovel Knight)
Finish off any boss using the Ground Spark technique. (Shovel Knight)
Finish any Stage without taking damage. (Shovel Knight)
Finish off the Black Knight with a reflected shot. (Shovel Knight)
Bounce on the Hoop Kid's hoop for 5 seconds. (Shovel Knight)
Purchase all available Shovel Blade upgrades. (Shovel Knight)
Have 50000 gold on hand. (Shovel Knight)
Help out all the moochers in the fancy shop. (Shovel Knight)
Bounce the same Alchemical Coin 5 times in a row. (Shovel Knight)
Finish the game. (Shovel Knight)
Finish the game without dying. (Shovel Knight)
Finish the game without spending any money. (Shovel Knight)
Finish the game without falling into a bottomless pit. (Shovel Knight)
Beat the game without collecting any relics. (Shovel Knight)
Beat the game within 1 hour and 30 minutes. (Shovel Knight)
Destroy every possible checkpoint in the game. (Shovel Knight)
Defeat 4 of the Order of No Quarter. (Shovel Knight)
Destroy all checkpoints in a single stage. (Shovel Knight)
Finish a level without eating any food. (Shovel Knight)
Use caution and common sense around campfires. (Shovel Knight)
Finish a level and swing the Shovel Blade fewer than 20 times. (Shovel Knight)
Spend a combined 25000 gold at the shop. (Shovel Knight)
Successfully fish 5 sparkling fishing spots. (Shovel Knight)
Discover the secrets of the Troupple King. (Shovel Knight)
Impress Mona with your skills. (Shovel Knight)
Buy your first item. (Shovel Knight)
Finish any stage without dying. (Shovel Knight)
Finish the game. (Specter Knight)
Find and return all Red Skulls. (Specter Knight)
Acquire all armor, curios, and upgrades. (Specter Knight)
Finish New Game Plus. (Specter Knight)
Finish the game without acquiring any Will or Darkness upgrades. (Specter Knight)
Finish any main stage without taking damage. (Specter Knight)
Beat the game within 1 hour and 30 minutes. (Specter Knight)
Destroy every possible checkpoint in the game. (Specter Knight)
Emerge unscathed from a battle with any boss besides Black Knight! (Specter Knight)
Obtain all Darkness and Will Upgrades from within the stages. (Specter Knight)
Reach the top of the climbing mini game. (Specter Knight)
Without replaying any stage or minigame, finish the game while holding 60000 gold or more. (Specter Knight)
Speak with every recruit within the Tower. (Specter Knight)
Chain together multiple targets with dash slashes 500 times. (Specter Knight)
Find Specter Knight's secret room! (Specter Knight)
Fill both of the tower's mysterious jars. (Specter Knight)
Land all 3 rail tricks in a single grind. (Specter Knight)
Use only curios to defeat any Boss Specter Knight is trying to recruit! (Specter Knight)
Reminisce and remain still on the Tower's rooftop for 30 seconds. (Specter Knight)
Obtain all Joustus cards. (King Knight)
Clear all 4 houses of Joustus without buying or reclaiming cards from Chester. (Not in New Game+) (King Knight)
As Shovel Knight, win the match with a reflected projectile. (Showdown)
As Plague Knight, defeat multiple foes by hurtling through them with a single Spin Burst. (Showdown)
As Specter Knight, use a Dash Slash to win by dunking a foe into lava or a pit that you would've fallen into. (Showdown)
As King Knight, reach the winning gem while still spinning after bashing into a foe. (Showdown)
As Shield Knight, use a single Shield Rush to both block a projectile and win the match. (Showdown)
As Black Knight, win the match by dodging a player and hitting them with a Dark Wave. (Showdown)
As Propeller Knight, defeat 2 or more foes without touching the ground. (Showdown)
As Polar Knight, defeat multiple foes with a single use of the Polar Plow. (Showdown)
Finish Story Mode without using a continue. (Showdown)
Attain a score of 100,000 in Targets. (Showdown)
Finish 10 matches in any stage with lava or a pit without falling in. (Showdown)
Use each of the items once. (Showdown)
Successfully parry 10 times during one match. (Showdown)
Fall through the warp floor 50 times. (Showdown)
Complete Story Mode on Hard difficulty. (Showdown)
Knock opponents into lava 50 times. (Showdown)
Defeat 50 Troupples during an encounter with the Troupple King. (Showdown)
KO 100 total opponents. (Showdown)
Win a stock match of 3 or more without losing a single stock. (Showdown)
Win Sudden Death 5 times. (Showdown)
See 20 different modes in Chester's Choice. (Showdown)
Watch all of Mona's dance. (Plague Knight)
Finish the game. (Plague Knight)
Finish the game without spending any money... including Cipher Coins! (Plague Knight)
Finish the game without collecting any arcana, bomb parts, or armors. (Plague Knight)
Beat the game within 1 hour and 30 minutes. (Plague Knight)
Finish the game without drinking any tonics. (Plague Knight)
Stay in the air for 10 seconds without landing on anything. (Plague Knight)
Collect all Cipher Coins. (Plague Knight)
Purchase or unlock all relics equipment and upgrades. (Plague Knight)
Finish New Game Plus. (Plague Knight)
Clear the the Hall of Champions in 3 minutes and 30 seconds or less. (Plague Knight)
Finish any Stage without taking damage. (Plague Knight)
Destroy every possible checkpoint in the game. (Plague Knight)
Emerge unscathed from a battle with any Knight of the Order of No Quarter... except for King Knight! (Plague Knight)
Retake the Explodatorium without breaking any grey blocks during the boss fight. (Plague Knight)
Trade each of the useless relics to Chester. (Plague Knight)
Defeat an Order Knight using only bomb jump explosions. (Plague Knight)
Give Oolong a sample of every explosion. (Plague Knight)
Finish any order of no quarter stage using 15 bombs or fewer. (Plague Knight)
Find Plague Knight's secret room. (Plague Knight)