That BLU Soldier turned out to be a RED Spy, who's now playing 'don't turn me into Swiss cheese!' with the Heavy.

The RED Soldier dodges the rocket. "Maggots!" He yells, firing again at Teja's feet.

More REDs are starting to pour over the hill ahead of them, streaming towards the cart. Closest is a Heavy-Medic pair and a Demoman, already launching grenades at the lot of them.