I can understand that - under dos - but as I recall quite a lot of gnu/nix tooling was workable on the Amiga - RCS harks back to 1984...
It requires a VGA card and those were more common in 386 IIRC and, anyway, performance-wise to run at 60 Hz it needs a 386. I never tried to run it on a 286 with a VGA card: don't know if that was a thing.
It's funny looking at that old assembly code and see ax, bx, cx, dx registers and not the eax, etc. ones.
The utilities I've compiled to .EXE so far are self-contained in one file and I just use UASM to create directly the .EXE:
uasm -mz myutil.asm
UASM v2.57 does the job in my case (note that I compile from Linux: UASM exists for several platforms/OSes):https://www.terraspace.co.uk/uasm.html
I haven't tried yet to compile the entire game yet: that one is more involved as it implies many files.