Weapons in Starforge can be either crafted or found. The blue chests will provide the weapon itself or the schematics required to make them.
Assault Rifles- These will be found in the blue chests scattered around the map. Currently they only vary in appearance. They are a standard full-auto, medium damage, medium fire rate rifle.
Gatling Guns- These are found in blue chests. They vary in appearance, but all perform identically. They take a few seconds to get going, but the damage is superior to the assault rifles once you do.
Chainsaws- These are useful as both a powerful melee weapon and a means to chop down trees. Can be found in blue chests. They vary only in appearance.
Frag Grenades- Must find the schematics in a chest in order to craft it. Requires 50 iron ore to make.
Smoke Grenades- Must find the schematics in a chest to craft this.
Double Barreled Rifle- Must find the schematics in a chest to make these.