Associate
I had an Amiga 500 (not sure on RAM) or other specifics other than a tape recorder and like yourself I stayed clear of the Atari ST as that was really just for musicians
Main games I recall playing most were Lemmings, Syndicate (brilliant game) and one whose name escape me atm but it was top down control army soliders point and click were you wanted them and shoot em up.
I've got an emulator up and running on my PC but have unable to really get into using it despite it emulating a super Amiga with hi-res etc as its not the same wow factor given todays PCs as it was back then.
I think this is the army game you were talking about ,Cannon fodder ,loved it
https://m.youtube.com/watch?v=5Fl1pCPb504