Defeat Baron at Palace

This is a continuation of the previous mission.

This battle can be tricky near the end, but the important thing to note is your health carries across all three stages (and there's no checkpoints), so if you die at one point, you go back to the beginning.

In the first stage, Praxis will simply shoot at you for a few seconds a time. Simply use your Blaster and shoot him down - it doesn't take long to whittle away at his health. When one third is gone, he'll change around his battle techniques: he'll shoot out missiles (you'll know where they land when you'll see the crosshairs on the floor), which can quickly and easily be dodged by rolling. In the short time afterwards, go crazy with the Blaster and you can knock off his health in no time.

The last form is the hardest of the bunch. Praxis ditches the long-distance attacks for a multitude of hard-hitting ones at a much closer distance. Firstly, he'll send a few red tornadoes after you. These inflict a lot of damage but they can be dodged simply by running as far away as you can, whereby they'll explode before reaching you. He can also try to ram you down with his vehicle which you can dodge nice and easily. Don't forget the health packs in the corner. When you finish him off, after the cutscene, you'll earn this trophy.