1) Wrench: Simply your mechanic wrench. VERY powerful meleé weapon.
2) Hunter rifle: A rifle you take from the hands of a dead Hunter. With a sniper and an automatic mode.
Acidgun: The Hiders, enemies of the Sphere and your allies, give it to you to fight it. You scavenger ammo from the Gasbags you kill.
4) Centurion machinegun: It is the amputated hand of a Centurion. It has both a machinegun and a grenadde-launcher mode.
5) Crawler grenades: Living grenades, with a sticky bomb function.
6) Crawler grenade launcher: It uses Crawlers as ammo. It may create a forcefield too.
7) Leechgun: With 4 different firing modes, which you gain by quitting energy of the own Sphere through nodes, you may do a variety of attacks with it... an ice attack and a plasma one between them.
Spiritual bow: Your weapon in Spiritual form. Powerful, but requires collecting souls as ammo. You get it in the Land of the Ancients.
9) Unknown: Unknown