How can I equip more than 3 weapons?
Hey man! This seems to be a recurring issue that I am actively trying to fix. Firepower Units (Tech) can increase your maximum weapons, but these are a random drop. The solution I am have in mind is to make tech persistent throughout your different games. That probably won't be an immediate fix though. I'm going to try to play with the forge and store first to balance things.
Hope this helps!