This is my 0 Forma All-Around [Mirage]. The 2 main abilities you'll be using are Mirages' 1st and 3rd. Her 1st spawns clones that use your weapons and basically give you 2 extra guns that do the same damage as yours. Her 3rd gives you a very large increase in damage, which pairs extremely well with your clones. The Hall of Malovence augment gives you even more damage as it increases the damage by 5% per kill. This is extremely good because, with a high-duration build, you can easily [Reach] insane amounts of damage.
As you can see, I have used the Helminth system to subsume pillage onto [Mirage]. This gives her Shielding Gating which is extremely important. This also strips 60% of enemy armor meaning you do even more damage.
This build is extremely cheap but also very fun, so enjoy Tenno!