spy update: throwing knife
primary fire does less damage, still instakill backstabs
secondary fire gives the spy a fighting chance with the knife, at a past a certain range does normal knife damage, before that (given it hits the opponent's back) it does backstab damage
if you MISS, you have to run and pick it up, or let it respawn: if you're stuck trying to melee you have to use your wimpy spy kung-fu which is hilarious to watch but completely ineffective