Let's start from the beginning. Thankfully since it's the Showa Era, Ace's skills wouldn't so far exceed Isshiki's.
For starters, Ultras are a race of superhumans, born and raised from the start of their lives to be able to handle such inherent powers in them. And then we have the Intergalactic Defence Force. Of the billions of Ultras living on the Land of Light, Ace's homeworld, only a million are enlisted to become a ranger, with a handful few from their homeworld alone that really stands out. Among them are a civilization observer, basically a security agent, and a member of the Elite Task Force, which of course entails an Ultra with exceptional abilities. And note, this only covers the basic of basics, and even then, by measure of some timeline stuff, Ace is head and shoulder above these guys because he is considered an Ultra Brother, the highest acknowledgement known even among the higher ups of the Land of Light.
To give an image of what the baseline is, even a normal ranger like Ultraman and Ultraseven, the latter of whom was only a galactic mapper mind you, are known to be well-versed in the various threats that are present in their universe. From monsters and aliens using invisibility, teleportation, and even reality warpers, Ace is noteworthy enough to be considered of the same caliber as these Ultras, being able to also adapt to the many fighting styles and tactics employed by their enemies.
It should also be noted, that Ace in the Showa Era alone fought against the gigantified form of the Yapool beings, who constantly live in an, and utilize extradimensional technology and forces to enact their plans. Ace fought this Giant Yapool, in that very same home base of extradimensional space where Yapool was freely manipulating the space itself to disorient Ace, and he powered through it with no external help.
When it comes to tactics, Ace
should opt for physical attacks. But given his experiences, I'd say there's just as much probability that he'd go for his expansive list of techniques that are bolstered by the AP advantage he has. He also has a few restraining techniques to help him buy time even with the LS disadvantage. For an example of what some of those might be, refer to this:
Ace demolishes basically some grunts (Around 7:42)
Extra note, Ultras' energy techniques are often also called Light waves or similar words, and that's usually because they're derived from their Inner Lights, which has the properties already mentioned before. They don't have to bypass any physical forces to attack the inner consciousness too, as they have shown time and again to be able to clash directly with someone that resides in the Inner Space, where their mind and soul reside. Here's one example of an even more amateur Ultra doing just that:
Geed directly hitting someone inside their Inner Space (17:24).
And apologies for the roundabout way of explaining this as the franchise itself gives sparse showings of these feats, but basically Light encompassing all aspects of existence it covers is something Darkness can overcome and vice versa, so this means an Ultra can apply the effects of what they're resisting.
A few examples being (
Belial overtaking and absorbing Geed's Light|2:37, a case for Dark Ultras)
*(
Gaia and Agul feeding into a spacetime warp|4:55, a case for Light users accidentally opening a wormhole when they don't control their powers)
I hope I've made a few things clear on how Ace's skill looks like, his opening tactics based on his experience, as well as some explanation on how his P&A works. By no means am I trying to exaggerate nor oversell anything, I just think it should be prudent as an Ultra supporter for me to emphasize certain pieces of information. That said, I will wait for development from here on out.
vs
