Playable levels:
10 - B-1 castle with underground tiles
15 - G-1 original 1-2, can warp to -1
16 - H-1 normal water level
17 - I-1 night trees
19 - K-1 castle with overlworld tiles
20 - L-1 original 8-1
21 - M-1 night trees
22 - N-1 normal level
25 - Q-1 water level
26 - R-1 night trees
27 - S-1 original 8-1
30 - V-1 night trees
32 - X-1 final level

Junk levels:
08 - 9-1 water, night
09 - A-1 clouds, night
11 - C-1 water, castle
12 - D-1 water, castle
13 - E-1 stuck, falling
14 - F-1 clouds, night
18 - J-1 water, castle
23 - O-1 clouds, night
24 - P-1 clouds
28 - T-1 underground
29 - U-1 water, castle
31 - W-1 stuck, castle
33 - Y-1 water, castle
34 - Z-1 clouds