Next, you will have to go right. This will allow you to get closer to a large concrete pipe (screen). This is where you will have to solve a new riddle, so I'd strongly recommend that you save your current progress.
You must perform a single jump here, so you'll end up inside the concrete pipe. As you've probably noticed, the pipe is moving, so you must do something about it. Activate a time stop function and start running forward (screen). This will allow you to reach the opposite platform safely. Turn left and start moving towards your current destination.
Start off by hiding behind the right wall. There's a sniper in this area and you will have to kill him before proceeding any further. The easiest way to do that would be to slow down the time. Once he's gone, start moving forward. Be careful, though. More enemy units will appear in this area, near the sniper tower. Use your suit to receive an advantage over your opponents.
Check my screen, because that's where you'll have to stop. You are going to be attacked by several soldiers here. One of them will be standing above you. Make sure that he's the first one to die. Once he's gone, deal with the rest of them. Enter a small bunker. There are some weapons here. Take them and deal with a new group of enemy soldiers.