There's a Liblast thread on Godot Engine Forum's and weapon designs and their story justification has been discussed there. If you'd like to chime in, here's the link:
https://godotforums.org/d/32089-liblast-a-foss-multiplayer-fps-game-made-with-100-open-source-software
#Liblast #GameDesign #Art #GodotEngine #Godot #GameDesign