Azure Striker Gunvolt Special Mission 5 S+ Rank, Cautious

Since this is the final special mission of the game, it's definitely supposed to be tough. You'll want to study the boss patterns and build some good equipment before you tackle this.
Necessary points: 1,300,000
Time required for best bonus: less than 13:00
Equipment used:
Gun: Orochi
Lenses: Adrenaline Lens + x 2, Vigor Lens + x 2 (switching between as needed)
Ring: QUILL Signet
Pendant: Lethal Lavaliere +
Specials:
Voltaic Chains, Luxcalibur, Septimal Surge and Galvanic Renewal (heal)
I'm not perfect at dodging enemy attacks, so my strategy was to build up my kudos score to around 500 for each boss and then do a finishing move (Luxcalibur or Voltaic Chains) to rack up extra points, sometimes casting Septimal Surge to increase my attack power, and sometimes healing. The two Adrenaline Lens + give me a 50% chance of keeping my SP after using a special, and if I'm unlucky, I switch to Vigor Lens + to speed up SP recovery. The QUILL Signet speeds up recovery if I deplete my electricity, and Lethal Lavaliere + gives a 1.2x bonus to earned kudos.
I really bungled some of the last boss fights, but I still managed to get the best rank.
The fastest time bonus will multiply your score by 1.5, so if you get 870,000 points and finish in under 13 minutes, you're golden.
Thanks to Skybane Zero, CrimsonSmasher, GreyXL, LordGalmoth and Judgment Waltz for their videos and advice.