Map Brightmarsh. You can dash over the Roof where the capturepoint is. Good to surprise and flank someone from behind/above. Also works with Evie,Drogoz,Maeve maybe even Willo (didnt tryed with willo yet)
If you accidentally feeding his reversal,try to create distances as far as possible and try to dodge it by moving and jumping when he shot the reversed damage, since the damage are reversed in projectiles type which make it harder to hit movingtarget
While Androxus is channeling Reversal, take the time to reload your weapon, switch targets for a moment, or escape if needed, as it's detrimental to you to attack him during this time.