Interesting. Lets see, Judging from Acacia set of move he has one combo that will work on Yhwach Time stop+Eat. Done, he won.
But with zero knowledge about how dangerous Yhwach Abilities is and + Yhwach is physically way weaker than him, he is unlikely to start with Time stop+Eat. The only time he made such a move was when he was in condition where he knew he had no other way to win other than use Time stop, and that was when the eight kings is about to destroy him with their combine attack. He will never use Time stop in other situation and without knowledge of how dangerous Yhwach's abilities are, he would almost certainly start by trying to eat Yhwach but without Time Stop
On the other hand, Yhwach wont have such disadvantage. First he has precog and second he have ability to passively understand
what he sees in the futures, that way he will have full intel of what Acacia can do and how dangerous some of his ability are and for comparasion, this is what he did to
ichigo bankaiwheichigo useshisBankai. Nope instantly broken and remember even with Bankai, Ichigo still have no change to bypass Almighty Resurrection yet Yhwach never gave him a change to use his bankai, let alone when Yhwach knew that he face against opponent who have the means to defeat him, and on top of intel advantage Yhwach will have speed advantage with The Almighty because Yhwach can use The Almighty to teleport himself to save distance to avoid a bite from Acacia in the case if Acacia tried to swallow Yhwach as a whole. Side Note: Yhwach has a rare type of teleportation because he teleported by fate manipulation himself.
Now based on my knowledge of Acacia's abilities, let's talk about some combos that Yhwach can do and I think can work on Acacia:
First Lets start with X-Axis. In this case, unless Acacia will use time stop as his first move(he won't), Yhwach will have attack speed advantage with X-Axis. This how X-Axis work:
X-Axis wont shot any bullet,
but rather it just penetrateanything between his weapoand his target, ignoring obstacles and durability. In short he doesn't shot anything and there are nothing for Acacia to eat, X-Axis just pierce anything from point A to point B and its effect are pretty much instantaneous, Acacia can only dodge this with by aim dodging but because Acacia dont know this, he will likely get shots couple of time before he realized X Axis True nature and each one of this shots will be disadvantage to him because with The Almighty Yhwach can make sure that Acacia cannot regenerate from any damage he received, on top of that X Axis have super Intangibility who is untouched even by Shinigami who can interact with spirits and intangible objects.
In addition to that, even if Acacia can bypass X Axis Intangibility, Yhwach can use the Balance to pretty much make Acacia taste his own attack literally, here how it work:
The Balance will allows its users to manipulate the fortune and misfortune that occurs within his sphere of influence, all good fortune experienced by the opponent in causing injury to him will be directed back to them as misfortune of the same magnitude. Furthermore, he can redirect all misfortune that befalls him onto his Freund Schild. On top of this,
any misfortune that befalls the Freund Schild can be reapplied back to his opponent to cause even more misfortune.
So If Acacia inflict wound to Yhwach such as Eat his arm off, The Balance will take affect and redirected Yhwach misfortune of losing his arm to Acacia so that Acacia will now lose his own arm, In addition Yhwach can redirect all misfortune that befalls him or in this case he losing his arm into Freund Schild, and any misfortune that befalls the Freund Schild can be reapplied back to Acacia to cause even more misfortune or in this case Acacia will lose yet another arm while Yhwach will be completely healed from his wound. Another thing in mind is I don't think of Acacia can eat The Balance, Acacia can eat gourmet luck because..
this is gourmet luck. gourmet luck have a form, it a living energy(kinda?) made of probability manipulation. The Balance doesn't have any of that so I'm not sure how he gonna eat The Balance probability manipulation.
Off course I'm fully aware that Acacia can neg The Balance Regenerationn via his bites but in this case it won be a problem since Yhwach can relied on The Almighty ability to rewrite the future and overcome this ability, especially since The Almighty have better healing capability than Orihime's causality manipulation, Orihime cant revive or heal Reio while after he absorb Reio, Yhwach has no problem reviving himself after he was killed by Ichigo.
Yhwach can also use the Fear to pretty much make Acacia to feel doubtful about his own ability to defeat Yhwach, This is how the Fear work: After Acacia is under its effect,
The Feat will searches through the memories of the subject to find any trace of fear they may have ever had in their life to act upon it, so even if they currently have no fear, if their past does they will be affected, although Äs further states that fear that has a cause is weak and can be stopped by experience, but true fear has no cause and therefore cannot be stopped with experience alone. From there, everything the target does from then on will be hindered by their own thoughts and fear of actions. It's potent enough to kill targets just out of fear. In addition to this, with Tatarforas The fear will work on
eyes contact and Acacia will only need one glance, closing his eyes afterwards is no use, because fear has embedded within his mind
Another excellent defensive ability for Yhwach to use is with The Wind: In short its a
spatial defensiveability thatAllow Yhwach to bendspace aroundhim to avoidattack, it also work great in teamwork since Nianzol use the wind to protect Yhwach, Jugram and Uryu from Kirinji and Reio soldiers attack
And last for me, another combo that I think can work is via the Visionary and The Yourself, here how it work, create 6 clones of Yhwach each clones of Yhwach use The Yourself to copy everyhing that Acacia have, basically made this match become Acacia versus 6 Acacia + 1 Yhwach to Almighty, X-Axis, The Balance, use The wind to protect his clones and The Fear Acacia from afar while he dealing with clones of himself.