Some Amiga testing here: Latest aos3 VBCC and Target software. Instead of having to stand watch for hours, this is the way time was measured. Time stamp of bmptoraw[.exe] (first compiled) is subtracted from that of CelticHeart.adf (last) to get elapsed time close enough.
Code:
Windows (MinGW): 00h 01m 57s
WinUAE + JIT: 00h 13m 59s
Amiga 500 + A530: 13h 17m 42s
Trap Runner has over twice the levels, two more worlds of gfx (three if Pacman counts), an intro, maybe more music. I wonder how long would that take on the Amiga?