Finale: Inkwell Hell
Inkwell Hell is the final section of Cuphead and only includes two boss fights, one with the Dice Master and the other with the Devil himself. You can find a secret Gold Coin under the stairs which lead up the casino.
If you agree with the Devil’s terms at the start of the One Hell of a Time level you’ll earn the achievement ‘Selling Out’. If you defeat the Devil you’ll earn the ‘Swing You Sinner’ and the ‘Souls Saved’ achievements.
Enter the casino to begin the first boss battle, All Bets are Off. Once you win the door to the right will open giving you access to One Hell of a Time.
If you’ve made it this far you’re doing very well. Congratulations on completing Cuphead, one of the most difficult platformers ever designed!