It's possible! First person to have done this :)

So my solo low level challenge run is finally finished!! I do plan on soloing every single boss on Godborn and doing every (or as many as possible) level 999 virtual trainer challenges solo also. The full game completion will be 1 or 2 huge videos depending on how long they end up being it is the true neutral ending of the CoC route I will be doing solo low level CoV later down the line (Yes I soloed Shiva on hard without ng+ or being level 99) Any superbosses/virtual battles will be their own video!

While this fight is rng heavy once he's summoned his initial spawns once it will be random you can actually mitigate the rng by playing smart, the issue is he heals off enemies he feeds on and obtains their affinities! However he only gains their remaining hp and since they have lower stats you do more damage. Taking out his minions is a bad idea, you want him to be neutral to physical so you can actually do meaningful damage to him anything outside a Max passive boosted crit figment is really not enough damage.

The way I think about my strategy is consider every enemy on the field as 1 total health pool. Hitting an enemy for 4,5k while not necessarily damaging Satan himself will greatly reduce the healing he gets when he consumes that enemy. It's fine to smack Satan with your Magatsuhi bar and deal around 10k damage with 4 + 1 turns but individually doing 2k to him then him healing off a full hp enemy is much worse than 2k less damage on Satan but you've done 5k to the minion.

The main annoyances are things like Fafnir, Arahabaki and Ganesha which stop Figment Slash from critting without Impaler and if he consumes them you cannot do any meaningful damage to him in this state, but its fine you can ensure all the remaining summons get damaged then instead of wasint time on Satan himself. If they are all already low then slowly chip him down more with Impaler +. Crit spam. He will also have a pattern where the AI do certain moves on specific turns particularly Dekajas and Dekundas when he builds up magatsuhi. He will also assume an ability depending on who he drains. There are 2 which give him the ability to fully heal and so you MUST kill them asap, the rest are manageable.

There are a small few mistakes in the video such as me using my magatsuhi to take out his healer and then it randomly choosing Kaiwan who was low hp and finishing him off. You want to intentionally leave them alive at low hp instead and a few other mistakes of just hitting into a resist stupidly or forgetting the turn pattern and buffing right before a dekaja. And I was playing really bad at the start since this was actually a test run!

I'll hopefully be uploading Demi Fiend and True Masakado Solo Godborns too and then it's onto all the level 999 challenges solo too!

Enjoy ♡