This task is not that simple for you’ll be require to kill one-hundred and seventy-five enemies while in the L.E.O. exoskeleton. Yes, it may take some time before you achieve it but if you do, it’s definitely worth it.

Below is a short guide on how this mission can be achieved:

1. You first get access to the L.E.O. exoskeleton in the chapter Road To Bastion.
Note: This trophy is missable so if your on the L.E.O. exoskeleton, don’t waste that opportunity.

2. This trophy can easily be farmed, as you can simply kill all the aliens within the first section and reload the chapter, as all percentages gained towards trophies will count, regardless of whether you restart, die, or anything else.

Hint: If you choose to do this, then it is advisable to try and kill five enemies with a shoulder bash attack in order to earn the “Ooooh Yeah!” achievement.

3. After you reach the required kill count, it will then be unlocked.

The presentation shown below is the video version of the guide, so if you want to view it through video for a little bit more clarification, here it is: