Time for fun.
Wait a bit for the guards to rush over to examine the light. Then take the gasoline ans use some of it to start a fire. Also get a tool that makes you look lie fighting the fire (eg shovel to throw sand on the fire, heavy cloth to strangle it. Work in a manner to get to the tunnel tent.
You grab the gasoline can and a small shovel and get out of the tank. You wait until the guards are on the other side of the camp before dousing a tent in gasoline and setting it on fire. You then run towards the tent with the tomb, completely away from both the fire and guards. You arrive at the tent unnoticed, you pyromaniac.
Throw the metal banana at the zombie.
Alain grabs on Bernard's banana throwing arm to stop him from killing us all.
"Are you crazy?!" He whispers eyes wide.
Bernard attempts to throw the banana, but Alain grabs on to his arm to stop him. The momentum of Bernards arm and Alain's clumsy footwork send them both tumbling toward the ground. The banana clatters to the ground, getting the attention of the mummy. It starts to rise and comes towards the two entangled men.
Well they aren't doing anything. Looks like I have to make the move then. Lets see just how bulletproof this thing is.
Powers on. Two to the heart, one to the head
Evan: Delisle carbine (6/8) with 2 extra magazines
You activate your powers. You shoot three shots, both of which whiff through the air in complete silence. The first two hit the mummy in its torso, and they do nothing more than jerk the mummy to one side for a second before it continues on to the delicious human sandwich on the ground. The third shot hits the mummy in the head, taking off part of it's skull. It falls to ground, gives gurgle, and tries to continue on by pulling itself forward with one arm. The other three limbs flop around as dead weight.