This is much easier if you unlock New Game+. You begin with all the consume events you've already completed still done, and can do all the hard ones right at the start, only limited by whether you've done the mission where you fight Capt. Cross for the first time, which you need to do in order to get the very last hard one. The UAV detectors are not present on the military bases at this point, making the infiltration ones a walk in the park, even on hard. The only thing is the web target consume ones, where it's best to look at the map and see where they all are, rather than following the HUD, as it takes you on the longest route possible.