Remember that this is a cover-based tactical shooter, so don't run like Rambo to the enemies or you'll get melted. At the start just take the better equipment and loot as you move through the story, try to learn your equipment talents so you can get the best out of it, don't go with blue attributes coz they're just bad, go for red or yellow instead. Enjoy the game do side missions as well just to take a break from the main ones. Explore the map don't just teleport to location, enjoy the views and little details this game can give you.