How to Solve the Rust Military Tunnel Puzzle

Enter the Military Tunnels monument.
Kill the scientists at the front of the tunnels.
Enter the tunnel.
Place the first fuse inside of the armory.
Turn right from the entrance after entering the tunnel.
Find the sign labeled "armory".
Place the fuse inside of the fuse box in the armory room.
Run back outside of the tunnels to get to the cave entrance and flip the second switch.
Go back outside to the main entrance where you just entered from.
Climb the ladder to the right (from the inside) and run past the shed in the distance (you will see it to your left) into the cave tunnel.
Stay to the left in the cave tunnel until you find a Green Keycard door.
Open the door, kill the scientists inside and flip the "Laboratory" switch.
Open the door to the right of the switch that leads into the main tunnel and work your way down.
From the green keycard door inside the tunnel that you just opened, work your way to the left.
Kill all the scientists in your way.
When you get far enough, you will see a "3" by 2 garage doors with a red container in the middle of the tunnel.
Once you have found the Red container, loot it for the elite crates.
At the red container, stick to the right to find the laboratory door.
Stay to the right from the red container.
Continue to work your way down the tunnel killing scientists.
Use your blue keycard to open the "Laboratory" door.
Kill the scientists inside.
Open the Red Keycard door inside of the laboratory.
Heal up before opening the last door.
Press the timer switch and swipe your red keycard.
Kill the scientists inside the room.
Enjoy your loot!

same

Enter the Military Tunnels monument.
Kill the scientists at the front of the tunnels.
Enter the tunnel.
Place the first fuse inside of the armory.
Turn right from the entrance after entering the tunnel.
Find the sign labeled "armory".
Place the fuse inside of the fuse box in the armory room.
Run back outside of the tunnels to get to the cave entrance and flip the second switch.
Go back outside to the main entrance where you just entered from.
Climb the ladder to the right (from the inside) and run past the shed in the distance (you will see it to your left) into the cave tunnel.
Stay to the left in the cave tunnel until you find a Green Keycard door.
Open the door, kill the scientists inside and flip the "Laboratory" switch.
Open the door to the right of the switch that leads into the main tunnel and work your way down.
From the green keycard door inside the tunnel that you just opened, work your way to the left.
Kill all the scientists in your way.
When you get far enough, you will see a "3" by 2 garage doors with a red container in the middle of the tunnel.
Once you have found the Red container, loot it for the elite crates.
At the red container, stick to the right to find the laboratory door.
Stay to the right from the red container.
Continue to work your way down the tunnel killing scientists.
Use your blue keycard to open the "Laboratory" door.
Kill the scientists inside.
Open the Red Keycard door inside of the laboratory.
Heal up before opening the last door.
Press the timer switch and swipe your red keycard.
Kill the scientists inside the room.
Enjoy your loot!