The Rooftops level introduces verticality and more complex platforming challenges. You'll need to use climbing mechanics extensively, grabbing ledges, pipes, and ladders to traverse the environment. Expect increased enemy presence, including ranged Nullmen. The objective is to navigate across the various rooftops, often requiring you to find hidden paths or manipulate environmental objects to create bridges or open new routes. Keep an eye out for supply crates containing weapons and ammo.
