hmm, maybe it would have a certain hp? like say 45? (and no gun) the up part about this, would be bullets wouldn't be able to hurt you (until hp ran out) and the down part would be that you couldn't fire any weapon...(unless it was like a turret

) o and another down part is that once every like 5-10 sec your energy would decrease, and wouldn't regain until the shield was off you....and once your down to 0 energy, every 20-30 sec, it takes like 1 or 2 damage off of the shield
sound better?