To begin with, some general stuff:
**It seems "Mystical Space Typhoon" always aims at the middle card. So does "Wind-Up Zenmaines".
**Apparently, Xyz Monsters are summoned in sucession. From lower attack to higher.
**The AI attacks at every chance it has even if that means losing all of its monsters.
During a few duels the AI made a few screw-ups. These are my experiences so far with it:
While using a Fire King:
**Uses 2 "Call of the Haunted" to target the same monsterat an unnecesary moment, during my Standby Phase.
**Topdecks Pot of Duality with an empty hand. Shows "Onslaught of the Fire Kings", "Dark Hole" and "Destruct Potion". I have "Summoner Monk" and a "Blade Armor Ninja" boosted by "Heroic Challenger - Extra Sword".
Picks "Destruct Potion". Gets owned next turn.
**Opens 1st turn with "Pot of Duality". Doesn't choose Solemn Warning, rather picks "Fire King Avatar Barong"
**Uses "Fire King Fire Circle" on "Lavalval Chain" (didn't use effect). Summons "Flamvell Firedog". Proceeds to suicide attack "Blade Armor Ninja". No backrow, no monsters. Overkill.
While using a Shark themed deck:
**Effect of "Abyss Dwelller" (1700 ATK) on its Main Phase 2. Let alone it was summoned while I had a Photon Thrasher (2100 ATK) on the field and the AI had no backrow.
**Rams "Two-Head Shark" against "Heroic Champion - Kusanagi" for no apparent reason.
**Sets Bottomless Trap Hole and nothing else while Said "Kusanagi" is face-up on the Field.
While using a Heroic Challenger deck:
**Normal summons "Goblindberg", Special Summoning "Heroic Challenger - Double Lance". That was fine. Then uses "Heroic Chance" on "Double Lance". I had no monsters.
**Proceeds to Overlay "Double Lance" with "Goblindberg" to summon "Gagaga Cowboy" in Attack Position. Uses "Cowboy" Attack Position effect. This is the same turn, I had no monsters.
**Uses "Compulsory Evacuation Device" to bounce my "Goblindberg". Effect still activates.
**Uses "Reinforcement of the Army" to search a"Heroic Champion - Spartan" instead of a "Heroic Champion - Double Lance". There was another one in the Graveyard, so the activation of the effect was possible.
I wanted to screw-up with the AI and used a Yubel themed deck:
**I summoned "Yubel - The Ultimate Nightmare". AI killed itself.
Just my observations on the matter. I know this is just Beta and needs a lot of work to function properly.