P-Ranking All Bosses Achievement

Master Cuphead's Delicious Last Course! This guide details how to achieve P-Ranks on all bosses, including secret bosses, and unlock every achievement.

Walkthrough:

1. A Vacation In The Wilds: Defeat all five main bosses in Inkwell Isle IV: The Moonshine Mob, Esther Winchester, Glumstone The Giant, Mortimer Freeze, and The Howling Aces.
2. Ranger: Obtain an A-Rank or higher on all bosses in Inkwell Isle IV, including the two secret bosses. This requires defeating them in under two minutes on Regular difficulty, with at least 3HP left, and landing three parries and six special attacks.
3. Alive And Kicking: Defeat any boss with Ms. Chalice equipped with the Astral Cookie charm.
4. Decadent: Defeat 10 main bosses with Ms. Chalice. Focus on bosses in Inkwell Isle I and II on Simple or Regular difficulty.
5. The Golden Touch: Defeat a boss using one of Ms. Chalice's Super Arts, such as Super Art I against the Announcer Snail or Psycarrot.
6. The Latest Sensation: Defeat a boss using one of Porkrind's new weapons: Converge, Crackshot, or Twist-Up.
7. Checkmate: Defeat all of the King Of Games' Champions (Pawns, Knight, Bishop, Rook, Queen) by parrying only, without weapons or charms. Ms. Chalice's dash parry is highly recommended.
8. A King's Admiration: Complete The King's Gauntlet by defeating all five Champions in sequence without failing.
9. Compliments To The Chef: Complete your quest on Inkwell Isle IV by defeating all five main bosses and collecting the ingredients for the Wondertart, leading to the final battle against Chef Saltbaker.
10. Cooked To Perfection: Achieve an S-Rank on a stage in Inkwell Isle IV. This requires Expert difficulty (unlocked after beating the main story and The Devil) and meeting the same criteria as A-Ranks. The Moonshine Mob is a recommended target.
11. The High Hat: Defeat a boss on Inkwell Isle IV without killing any of its minions. Esther Winchester in