A slightly edited version of the build that was at the top but was deleted not to long ago (the "op vortex spam build" that got a lot of heat that I don't know nor care about)

Basically First and foremost this build is made of glass. Meaning it cant really take a lot of damage especially on high level content without the use of other pieces of kit to back it up such as a pet with shield and life restore mods and your guns and melee doing primarily AOE damage. Photon strike is replaced with rebuild shields due to the low amount of strength making photon strike at its weakest (the companion mod for the Hound outshines it sometimes). Tesla Nervo's Is used to aid with grouping enemies for AOE attacks. Vortex reaches across the map but doesn't have a lot of damage so armor stripping isn't viable but allows you to quickly clear the map so long as no obstacles are in the [War] (which sadly is the case in some tiles). Dispensary (proteas subsume) should be useable over rebuild shields. I have yet to test that out but I don't see why not.

So long as this build is used correctly you should have no real issues that aren't easily solvable.

Recommended Loadout (Not required and are just guidelines for what to use):

Tenet Envoy: https://overframe.gg/build/243715/

Fast AOE

Riven Falcor: https://overframe.gg/build/243722/

Heavy Damaging single hit AOE (I know a Glave prime works better I just like the aesthetic hence why these are merely suggestions)

Tenet Detron: https://overframe.gg/build/243725/

Backs up the riven [Falcor] and fits really nicely due to its alt fire. Only weapon that doesn't use AOE on purpose as having all AOE is bound to cause some problems up close thanks to the staggering that was introduced after self damage was cut from the game)

Hound: (Unable to Make a build)

Companion for health and rebuilding shields used mostly for utility. Other companions are also viable this is just what I prefer.
Due to the inability to make a hound build I'm just gonna post the mods the hound components don't really matter just use what you think is best: Shield Charger, Medi-Ray, Guardian, Aerial Prospectus, Reflex Denial, Repo Audit, Sanctuary, link armor, Link Health, Link Shields. All slots polarized accordingly (I know lots of work for a hound that's main purpose is to [Protect] and heal you) As for the Precept mods [Repo Audit] if it works like I think it does (I haven't been able to get solid results yet) should serve as an emergency "[Shelter]" while the other two are just for added protection and random aoe strikes.

LASTLY on 300%strength [Vauban] arbitration you can pretty much ignore all the above