Single Player: Upgrade all Nanosuit modules to Maximum level
This achievement can take a little time and understanding of the nanosuit upgrades. To pull up the nanosuit menu, you need to press . First thing you'll want to do is unlock all possible modules, by collecting all 16 Nanosuit Upgrade Kits throughout the game, and then purchase all the modules. Now, you'll need to complete the challenges to upgrade every module, by completing the tasks listed next to each one. When the task is completed, the module will be marked with a yellow star, and you will be notified. At that point, you should switch out to another module.
To make this go as fast as possible, it is suggested that you pick modules that have similar goals so you can work at all 4 slots at the same time. The achievement will unlock when you have unlocked upgrades for all modules.