It seems odd that each enemy faction has a decently fleshed out arsenal, yet, aside from some stylized exotics, we can't use any of them.
Imagine equipping the Vex torch hammer or Fallen shrapnel launcher as heavy weapons, using the wire rifle or shock pistols.
Seems like a real missed opportunity.just
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Honostly, the enemy weapons are trash. Have you watched the enemies fight each other and how little damage they to do each other? If I'm out of ammo, I'll let my fists fly before I pick up the crap they call weapons.