1. In Extreme difficulty and without dying. Deploy to Caimaines Charlie and complete the missions " Submarine Fleet 1. Submarine Fleet 2, and Submarine Fleet 3.


2. In Ramanzo, using only CQC. Deploy to Ramanzo Bravo. Then complete the missions "El Gato, and "The Real El Gato.

3. In Flor De Oro, in Extreme Difficulty and with being detected. Deploy to Flor De Oro Charlie. Then complete the mission "The Trail of The General".

This are all repeat challenges, so shouldn't be that hard for those who already did them.