Here's a puzzler thats bugged me on and off for a few years.
Back in 89-90 a friend had a game on his A500 that we used to play quite a lot. It was a shoot 'em up, 3/4 above view, like Chaos Engine or Alien Breed except the scrolling was limited to vertical only not 8 way.
The sprites were really small like 16x16 pixels yet very detailed (from memory).
In the first level, you walked around a city with a gun and shot thughs, you could upgrade your pistol to shotguns and flamethrowers.
One thing I remember clearly (oddly) is that garbage bins had flies buzzing around the tops.
Its not Syndicate, think earlier...
Does this description jump out at anyone?