Some time ago I created a map and placed Peacekeepers in some not the best spot. I had fun playing it. I made a scenario out of it. It is not a very difficult game, but you may find it not that easy either. There is an own to scenario alphax.txt, which fixes some special abilities bugs, and allows for heavy transport, which is disabled in original alphax.txt. Also there is a cruiser probe and XX missile.
The folder should be placed into "scenarios" folder and started as a scenario from ingame menu.