Recently a guide was created by some on the Discord about the scrap engine.Thanks! It isn't as informative as i hoped, but still very useful.
https://noemica.github.io/cog-minder/wiki.html#Scrap%20Engine
Scrap Engine is actually one of the most powerful items in the game when used properly (people have put together flying builds with massive integrity and weapons that can one-shot any bot in the game--any bot)I don't doubt its power when used well (and with sensors to avoid constant fights), though i wasn't expecting the "one-shot any bot" part.
After reading the guide lyrabold linked to, i think i can see how to create those "one-shot" weapons, which i think would need to be multi-shot?