Navarone's Fortress [Trafaria]

All right! The time has come. We got to show them what we're made of!
You have got to conquer that bloody fortress like there was no tomorrow!

First of all, act stealthy. Pay attention and watch your step.
Avoid getting seen or even caught!
The mission is clear as water:
Approach the fortress and follow the steps to nail it!
In the end, rise our flag up in the skies and take a photo of it.
We'll be watching from the other side!
God speed!