How Many Men Would Survive?

While the enemies are looking down you sneak up on one of them and you slice his neck with your dagger and when you did so the other one saw you and jumped on you like a wild animal. You notice he wants to bite you but your one of your men takes the advantage to stab him with his sword.
Now that those two died you tell your 10 men to fire at the enemies below
You check on the other 40 but you only see 20 and you also see 10 enemies sneaking up on your 20 men
So you...