Blow a hole in the walls

You decide to blow a hole into the wall of the complex. Two of them in fact, one to serve as a distraction, another one that you use to make your entrance. And they actually work! There is a pair of guards who rush to the opening you created. But by that time you are in, guns at the ready, taking down the both of them with shots aimed at their chests.

Onward!

You go forward in the complex, the alarm bell buzzing, hearing rapid footsteps from all directions. As you reach the end of the corridor, you arrive to a junction. You could go to the right or the left. Sadly, the schematics were not provided to you. And that means you have zero idea where they lead!