[X] Blow the Charges and Run!: You've destroyed the majority of the enemy force, but your forces are bloodied, exhausted and running low on ammo. And the worst of the enemy assault has yet to come. Blow the charges and have the Knights cover the retreat back to Lanner. You'll finish the enemy off when your forces are well rested and better supplied.
[x] Blow the Charges and Bury Them!: The light at the end of the tunnel is visible. Wait until the enemy column is in the avalanche zone and trigger the explosives. Then, send your Knights and soldiers forward to finish off this threat and end this nightmare.