Just don't forget you need to have researched parasitism (40 EE) in the current loop. You'll probably have done this but don't plan on using it early in a loop.
General ideas for getting to 1000%
-You're correct in saying orgies are not vital in this phase. You really want prolonged battles with many high end uses of each move. Orgies can help you get those high levels, but then you need to make sure the chosen have a lot of time to use those high levels of circumstance. Trauma has no impact on this other than letting you surround for longer.
If you can get Orgies on the Chosen before Extermination is complete, they're great as they stack up Circumstance damage (making each move raise the Punisher % more) and they add to later surround turns. Best thing you can do is get a short/medium Orgy done before Extermination finishes, but after Extermination is finished you should be surrounding one at a time to maximize the number of moves the Chosen do.
-Remember that they won't use a move twice in a row. In practice, this means that if they only have one move to do (slaughter or exhibit) they'll do that then regen, thus limiting the percentage growth. Try to stop them doing this as much as possible.
-Slaughter benefits from other chosen being surrounded for a long time, and probably is the easiest to complete. It will only be used when the surround timer is 3+. Also it's best to only have one surround happening for this, otherwise it's a doubly effective move.
-Exhibition is annoying, you don't want them using a low level, regenerating x4. One idea is to let them use a level, capture them to prevent the regen, then they'll use it again once released. They can "overwrite" a much lower debuff but this is a bit unpredictable.
-Explode has a hard limit of 3 uses (barring forsaken) if you focus on the one chosen, and usually only 1 use if you spread the love around. You'll probably only get 90% each time, 120% if you're lucky but at least this one's very predictable.
Your Explode is much more effective if it's concentrated on one Chosen. Instead of getting 90 + 90 + 90, you can get 90 + 150 + 180. I often find myself getting Explode to 1000% before I really focus on bringing the other stats up because it can be done with a cheap Commander, and can unlock endgame downtime actions. (Strategy: Capture 1 at the beginning with a Commander with INJU Punisher (no other Circumstance), 5 or more turns, 5 captures [or 3 if you haven't unlocked 5 yet]. When they Explode, Surround them and raise other Circumstances, starting with HATE. When they break the Surround, Capture them again, then 2 turns later, Capture them a third time.)
-Striptease just requires a lot of surrounds, it'll be used every time a new one is started so cater your surrounds to that and time it so the one you want does the stripping.
For an integrated strategy, I generally do the following:
1) Unlock all T3s by using a massive Orgy.
2) Get any Distortions I want set/activated/whatever.
3) Use the INJU Punisher method above to focus on one Chosen at a time until I've broken all the T4 CON I want. (normally, during this process, the T3s that I've earned enough damage for naturally unlock)
4) Use 5-capture max turns normal Commanders with Flight to get early Orgies set up with whatever Circumstance is convenient based on Distortions.
5) Once they are released from Orgy, Extermination will be complete. Capture one at a time to keep them using moves.
Anyone able to do something like this for animalistics and undead? I find their move use a bit random.
This info is valid for Campaign mode--I've not completed the Undead Clash challenge.
Undead:
Curse Lock: They will use this all the fucking time, as long as they have some HATE damage. Build up HATE and watch them go at it. Expect to not Research or buy Commanders for a day after you've worked on this.
Consume Vitality: They will use this if it increases their stacks of Surging Vitality and they have some PLEA damage. I find I can one-or two-shot this one (depending on my Achievements). Once they fire off a giant one of these, understand that you'll be leaving them alone for a few days/ a while. If you need multiple days on this, target them with a Forsaken that deals PLEA near the beginning of the fight (maybe set up a bit of EXPO on someone else first), let them Consume, , then do the rest of the fight while leaving them alone. Repeat the next day, and the next, for as many days as needed to break T4 INN (shouldn't be more than 3).
Seals: They will use this all the fucking time, as long as they have some INJU damage. Easy to plan around--two turns after they do Second Seal, use a Forsaken to do some INJU damage and they'll have to start over again. Doesn't take long to build.
Enervate: They will use this all the fucking time, even if they don't have EXPO damage. This one will probably pop off sometime while you're getting the other Chosen set up. Don't let this get much over its maximum or your Loop gets really tricky, even if this means capturing this Chosen even during times you can't damage it (from Surging Vitality).
Animalistic: (I have less experience here)
Wild Hunt: Seems like they use this whenever it's easier than Regenerating some Circ damage down. Deal some Hate damge, then do it again, as many times as you can.
Surrender to Instincts: Seems easy to break with a Forsaken that deals PLEA damage. Capture after they use it, then they'll probably use it again. I think it would work if you Capture/Release repeatedly with a Forsaken that deals this kind of damage, have not tested yet. The low increase on this one means it takes a while to break normally. [EDIT: Confirmed, it does work.]
Frenzy: I have a hard time figuring out when they use this move, honestly. I've had quite a few turns where based on my understanding of how they choose moves, they should be using this move, but then they instead Regenerate. Maybe you can get it easily by doing something like Surrender above with an INJU focused commander that can Release? This one was a real bitch to raise last time I broke it.
Mating Dance: Honestly, not too sure of this one. They won't use it while it's still active. I haven't had to worry about this one, generally--they use it often enough that this breaks in a reasonable amount of time.