The impossible and the unthinkable happened. Terrorists have taken over the underground control complex of a nuclear missile site.
It's up to you to infiltrate the installation and eliminate the leader of the terrorist army. It won't be easy.
Powerful tanks, treacherous waterways, and bridges are now all part of enemy territory.
The only weapon you can defeat the terrorists with is HEAVY BARREL - but it has been dismantled and is in pieces inside the facility itself.
Once you've made your way inside, you need to find the keys and reassemble the weapon.
Brute force alone will not defeat terrorists. It's not a job for just anyone. That's why you are here!