I just bought game, big thanks for Amiga version!
My configuration is A1200 and Warp 1260 with 68060@100MHz, 224MB FastRAM, fast SD card (V30) in Warp SD slot (much faster transfer than by IDE onboard A1200). But there is problem with sound and fading out at once. Sound begins to be very jerky when fade out begins (e.g. while changing locations). It's very annoying regarding comfortable playing (regarding sound). I'm using BlazeWCP and tried even with FBlit (with this program I was able to play even VideoCD andAVI/MPEG/QT/etc. videos in 320 x 2xx resolution on AGA with PPC). Of course I'm talking about AGA fullscreen version. OCS version in fullscreen works fine. I suppose probably something's wrong with AGA fade out procedure.
Also You should know that Amiga supports 3 buttons in normal standard and 7 buttons in CD32 standard (which could be used on any Amiga, not only CD32). It could be used for run (plus cancel) on different button than action, which is annoying to use when You're close to someone or something to use/check. 3rd button is on pin 5, more informations about it are here: http://wiki.icomp.de/wiki/DE-9_Joystick
As for Amiga version itself pack is very untidy and needs to work on it to begins game work. Game is not running from Workbench (with icon) and there is lack of Amiga specific flags, e.g. very important executable one. Simple script should be done in this case and some icons should be nice. Archive should be done on Amiga (yes, there is ZIP archiver).
ZIP: http://aminet.net/package/util/arc/ZIP232
7ZIP: http://aminet.net/package/util/arc/p7zip-9.13-m68k