They deleted all prototype levels except for Card's
0 = StudioMDHR intro screen
1 = Press start screen
2 = Start menu
3 = Inkwell Isle One
4 = Inkwell Isle Two
5 = Inkwell Isle Three
6 = Inkwell Hell
7 = The Debug Menu
8 = Tutorial
9 = Captain Brineybeard's boss battle
10 = Cagney's boss battle
11 = Phantom Express' boss battle
12 = The Rot Pack's boss battle
13 = Ribby & Croaks boss battle
14 = Rumor Honeybottoms' boss battle
15 = Werner Werman's boss battle
16 = Grim Matchstick's boss battle
17 = Wally Warbles' boss battle
18 = Cala Maria's boss battle
19 = Hilda Berg's boss battle
20 = Goopy le Grande boss battle
21 = Baroness von Bon Bon's boss battle
22 = Dr. Kahl's Robot's boss battle
23 = Beppi The Clown's boss battle
24 = Sally Stageplay's boss battle
25 = Pip & Dot's boss battle
26 = Card's boss battle
27 = Chips Bettigan's boss battle
28 = Mr. Wheezy's boss battle
29 = Tipsy Troop's boss battle
30 = Pirouletta's boss battle
31 = Hopus Pocus boss battle
32 = Djimmi The Great's boss battle
33 = Porkrind's shop
34 = Phear Lap's boss battle
35 = Mr. Chimes's boss battle
36 = Mangosteen's boss battle
37 = King Dice's boss battle
38 = The Devil's boss battle
39 = Victory screen
40 = Mausoleum 1
41 = The Elder Kettle
42 = Forest Follies
43 = Treetop Trouble
44 = Funfair Fever
45 = Funhouse Frazzle
46 = Perilous Piers
47 = Rugged Ridge
48 = Inside a die house
49 = You ain't seeing the big cheese cutscene
50 = Cuphead storybook/intro
51 = "hand over the soul contracts" cutscene
52 = Aeroplane blueprint
53 = Good ending storybook
54 = The Credits
55 = The Elder Kettle says they're getting stronger
56 = King Dice noting Cuphead's success