Mountain Trail Riverside | Second act - South America MGS4:GotP Guide

Pay attention to more distinct footsteps. You can now use the Solid Eye less often, soldier you meet during your trip are pretty good scouts [A] and can even hear it's buzzing. Try to avoid them.

Once again the team had split up [A], [B]. Move towards [B]. When you get to tall grass move very careful and don't turn on the Solid Eye. There is an ambush prepared by two soldiers. To pass them throw an ammo clip behind them.

When they turn to check the noise - move along. There is also another soldier waiting for you later - just avoid him.

You can now choose three ways: [A], [B] and [C]. Use [C]. Avoiding patrols you should get to lighted road.