Chose Your Aura Mod in synergy to your Weapon Choice of course!

If you have acess to Energy Conversion, its way cheaper Endo investment then Transient Fortitude!.

Charge 1-2 Enemies and you should have enough Ironskin to survive a full Round of High Index.

WARNING:
As always Aracanes only enhance the build, they are not needed to play it ;)
Same goes for Exilus, Enhances gameplay but not needed.