OUTRIDERS

OK to keep this simple this is for finishing the full run of the trials at the end game. Most of It until the final battle is just kill everything, level up when and If you can.
The final boss is a little bit tougher than most enemies but easily achieved he basically has 3 phases.
1. Open up on him and do as much damage as possible, he will then cover most of the area in an aoe effect which is marked in the floor, to dodge just run around the outside dodging his attacks. This will go on for a little while then you can damage him again.

Rinse and repeat,
His finial phase is a repeat of phase 2 just a little more manic.

Also worth noting is to watch out for his shadow solders and the darkness on the floor as that will grab you and slow you down.

Every now and then he has and attack that's undodgeable and he will lock your skills for about 10 seconds (they will have chains on them)

Just keep dodging and repeat, I haven't soloed it yet but it's possible I just found it easier in a group.

Happy hunting people