Full list of all 83 Shotgun King: The Final Checkmate achievements.
The base game contains 23 achievements, and there is 1 DLC pack containing 60 achievements.
Win with The Moat, Wand of Gust and August Presence
Win with Ermine Belt, Kingdom Wealth and Unjust Decree
Win with Ruins, Pillage and Kingly Alms
Win with Militia, Assault and Pikemen
Win with Zealots, Ascension and The Red Book
Win with Royal Loafers, Wand of Wings and Unfaithful Steed
Win with Three Extra Barrels
Win with Conclave, Cardinal and Sanctity
Win with Ritual Dagger, Taunting Hop and Subtle Poison
Win with Ammunition Depot, Elite Gem and Small Fry Harvest
Win with Sacred Crown, Majestic Censer and Courteous Jousting
Have 3 Magic Wands
Win with High Focus, Crow's Blessing and Engraved Scope
Win with Two Rightful Curtsies and The Moat
Win with Genderqueer, Saboteur and The Secret Heir
Win with Majestic Censer, Black Mist and Cornered Despot
Kill The White King
Have 10 black cards
Win with Pillage, Revolution and Conscription
Win with Iron Maiden, Genderqueer and King's Mistress
Win with Castle, Kite Shield and Bodyguard
Kill The Black Bishop
Kill The Red Book
Have 6+ rooks on the board at one time
Beat Throne mode without using a folly shield
Beat Throne mode in less than 2 minutes
Have 20+ ammo
Win with Analysis Paralysis, Sacred Crown, Black Mist
Win with Bushido, Caltrops, Taunting Hop
Win with Royal Loafers, Cornered Despot, Unholy Call
Win with Nightbane, Bushido, Ritual Dagger
Win with Throne Room, Kingdom Wealth, Castle
Have 5+ queens on the board at one time
Win with Court of the King, Court of the King, Full Plate Armor
Have 2 knights, 2 rooks, 2 bishops, 1 queen, 1 king, and 8 pawns on the enemy field
Kill an Iron Queen
Make a rook save the king from a flying piece
Kill the white king by throwing his heir at him
Win with Cavalry, Lookout Tower, Conclave
Destroy the last leader and the black king with a grenade
Finish throne at rank 8
Finish throne at rank 7
Have more ammo in your clip than in your max reserves
Finish throne at rank 6
Finish throne at rank 5
Finish throne at rank 4
Finish throne at rank 3
Finish throne at rank 2
Grab the queen and carry her to the square you start the round on
Beat Throne mode in less than 5 minutes
Get eaten by the white king
Kill the white king by hopping on him
Beat throne mode with this shotgun
Finish a floor without killing any non-leader piece
Activating black mist 9 times
Be threatened by 4 pieces at once
Have an arc of 120 or higher
Finish a floor moving only with souls
Push a piece out of the moat
Finish a floor by turn 6
Get killed by your own grenade
Have a firepower equal to 1
Finish a floor without moving to a white tile
Finish a floor without killing any pawn
Win with A Piercing Truth, Blunderbuss, Welcome Gift
Beat Throne mode without letting a pawn promote
Finish throne at rank 1
Win with Cavalry, Kite Shield, Courteous Jousting
Win with Guillotine, Cannon Fodder, Small Fry Harvest
Win with Bloodless Coups, Peace, Philanthropy
Win with Highest Dungeon, Cathedral, Trowel
Beat Throne mode without killing a queen
Finish throne at rank 9
Finish throne at rank 10
Finish throne at rank 11
Finish throne at rank 12
Finish throne at rank 13
Finish throne at rank 14
Finish throne at rank 15