- Checkpointless
Destroy every possible checkpoint in the game. (Specter Knight)
- Untouched
Emerge unscathed from a battle with any boss besides Black Knight! (Specter Knight)
- Wisp Whisperer
Obtain all Darkness and Will Upgrades from within the stages. (Specter Knight)
- Make A Killing
Without replaying any stage or minigame, finish the game while holding 60000 gold or more. (Specter Knight)
- Scythe Economy
Complete any Order of No Quarter recruit stage using your standing slash 10 times or fewer. Dash Slashes are ok! (Specter Knight)
- Curio Conquest
Use only curios to defeat any Boss Specter Knight is trying to recruit! (Specter Knight)
- Card Completionist
Obtain all Joustus cards. (King Knight)
- Beeline
Complete the game in fewer than 25 stages. (King Knight)
- Naked King
Finish the game without acquiring any heirlooms, health upgrades, or vigor upgrades. Armors are ok! (King Knight)
- Hurry Up!
Beat the game within 1 hour and 30 minutes. (King Knight)
- Fearless Champ
Clear all 4 houses of Joustus without buying or reclaiming cards from Chester. (Not in New Game+) (King Knight)
- Heartless
Finish a Joustus Judge stage without dying or collecting any food or health hearts. (King Knight)
- Destruction Dominoes
As Plague Knight, defeat multiple foes by hurtling through them with a single Spin Burst. (Showdown)
- Dark Dunk
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)
- Fancy Feet
As King Knight, reach the winning gem while still spinning after bashing into a foe. (Showdown)
- Stay Where You Are!
As Shield Knight, use a single Shield Rush to both block a projectile and win the match. (Showdown)
- From Shadow!
As Black Knight, win the match by dodging a player and hitting them with a Dark Wave. (Showdown)
- Aerial Ace
As Propeller Knight, defeat 2 or more foes without touching the ground. (Showdown)
- Undermined
- Chain Reaction
- Plower Power
As Polar Knight, defeat multiple foes with a single use of the Polar Plow. (Showdown)
- Whoops!
- Hover Queenie
- The Storm Is Coming!
- Reize for the Sky
- Shrouded Strike
- Elementary!
- From Nowhere
- Hops and Dreams
- Liquid Assets
- Percy's Pal
Attain a score of 100,000 in Targets. (Showdown)
- Warp Walker
Fall through the warp floor 50 times. (Showdown)
- Shatterer
Complete Story Mode on Hard difficulty. (Showdown)
- Troupple Tango
Defeat 50 Troupples during an encounter with the Troupple King. (Showdown)
- Clutch!
Win Sudden Death 5 times. (Showdown)
- Chester's Chum
See 20 different modes in Chester's Choice. (Showdown)
- Again!
Finish New Game Plus. (Plague Knight)
- Mint Condition
Collect all Cipher Coins. (Plague Knight)
- Bomb Economy
Finish any order of no quarter stage using 15 bombs or fewer. (Plague Knight)
- Bomb Jump Blitz
Defeat an Order Knight using only bomb jump explosions. (Plague Knight)
- Untouched
Emerge unscathed from a battle with any Knight of the Order of No Quarter... except for King Knight! (Plague Knight)
- No Damage!
Finish any Stage without taking damage. (Plague Knight)
- Defend the Lab!
Retake the Explodatorium without breaking any grey blocks during the boss fight. (Plague Knight)
- Hall Villain
Clear the the Hall of Champions in 3 minutes and 30 seconds or less. (Plague Knight)
- Maxed Out
Purchase or unlock all relics equipment and upgrades. (Plague Knight)
- Poor Oolong
Give Oolong a sample of every explosion. (Plague Knight)
- Creep
Watch all of Mona's dance. (Plague Knight)
- Hang Time
Stay in the air for 10 seconds without landing on anything. (Plague Knight)
- Victory!
Finish the game. (Plague Knight)
- Get Out Of My Room!
Find Plague Knight's secret room. (Plague Knight)
- Penny Pincher
Finish the game without spending any money... including Cipher Coins! (Plague Knight)
- Naked Plague
Finish the game without collecting any arcana, bomb parts, or armors. (Plague Knight)
- Hurry Up!
Beat the game within 1 hour and 30 minutes. (Plague Knight)
- Checkpointless
Destroy every possible checkpoint in the game. (Plague Knight)
- Trading Up
Trade each of the useless relics to Chester. (Plague Knight)
- Teetotaler
Finish the game without drinking any tonics. (Plague Knight)