Would you like Claude's doppelgänger to help you? Your dream has come true.
Controls: Press O and a doppelgänger will appear near you. Press L to give him your weapon (you won't lose it). Press O again to release the doppelgänger (He'll just walk like a random ped). You can only spawn one. If the double dies, press O to make its corpse disappear (I did this so as not to overload the game).