Infernal Arvis GHB

I beat it with Brave Lyn, Klein, Arvis 5*+1, and Linde. I also cheesed my 2nd account with 2 dancers Reinhardt and Brave Roy

For me it was easiest GHB ever. First time I beat all 3 levels on first try. I used elincia b. Lyn,
Reindartd, aND p.azura.

I started off with ELINCIA. on front left and reinhard behind her. B.Lyn dront right and p.azura. behind her.

E kills first mage to left staying out of the way of bottom blue cavalry. Reinhardt stayed put on spot whIle b.Lyn killed green cav then got danced to kill the mage to the right staying out of range of left blue cav and arvis. Blue cav then attack p.azura. getting killed.

From there I stayed out of arvis range and bottom spawn while the rest killed middle and top spawns.

Eventually arvis moves up on turn 5 I think and adds two more mage spawns. Left red and blue right. Elincia killed left red while b.Lyn capped blue right. Reinhard then smiled and pwn arvis while p.azura. dance for the win.

For me it was easiest GHB ever. First time I beat all 3 levels on first try. I used b.Ike b. Lyn,
Reindartd, aND p.azura.

Beat it with my freshly built flying emblem.
SCorrin, elincia, michalis and valter.
It was pretty easy since all the enemies are easy to pick off /bait out. Michalis was putting in work with sol just straight up tanking hits left and right.
This map took the least tries of any GHB ive ever done :')

I did it in one turn with Reinhardt, Cecilia, B!Roy, and Roderick.
Cecilia was +Attack with Vanilla Gronnblade and Hone Cavalry.
Roderick had life and Death and Fortify Cavalry.
Reinhardt had his staple set and Goad Cavalry.
B!Roy had Fury, Galeforce, and Hone Cavalry.
Roderick killed the Red tome, Reinhardt killed the blue mage, Cecilia​ killed the Lance cav, Roy killed the axe cav and then galeforced and killed Arvis.

I did it with P!Inigo (or any dancer, really), Reinhardt, B!Lyn and Cordelia, who was my core member. With Quickened Pulse, Galeforce and Inigo's help, she killed the blue mage, the lance unit and Arvis. The other two did the rest.
I have to mention that Cordelia can't take a hit from the lance unit if she's -def and to kill him she has to quad him. Mine is +spd but with lancebreaker 1 it wouldn't matter

If you haven't beaten it yet, Brave Bow archers absolutely decimate this map. Use P!Azura, Celica, Klein, and either another BB archer (ideal) or a blue mage.

Celica will take out all of the armour units, while the archer should take out the blue mage and then the first mage reinforcement. If your Klein has Life and Death or Swift Sparrow (and isn't -SPD), he will take out the axe cavalry that will end up approaching him as well. If he doesn't have that, Glacies (should) work instead.

Have your blue mage kill the red mage and P!Azura kill the lance cavalry units. Arvis will probably give you trouble, but you can use the red mage reinforcement and the last cavalry unit to approach you to charge up your blue mage's special. I would highly recommend putting R Tomebreaker on your blue mage.

Personally, I used two BB L&D archers, one of which was fast enough to quad the cavalry units (the other of which was helped by my red mage), so a blue mage's effectiveness is admittedly speculation on my part.

I don't know what your Corrin's set is, but a neutral Summer Corrin with some sort of ATK or RES buff (Atk +3 (not Res +3 though), Death Blow, Swift Sparrow, Swift Strike, Warding Blow, Fury, etc.), R Tomebreaker, at least 17 HP, and Glacies activating will kill full HP Arvis. If she doesn't have R Tomebreaker, she just needs at least 45 ATK, 39 SPD, and 26 RES (or 43 ATK/30 RES) in combat and Glacies activating. (This means your Linde should also be able to kill Arvis). They have to initiate, though; Arvis initiating will kill whomever he attacks. Also make sure to keep them out of Arvis' sightline (to avoid debuffs), or they won't be able to kill him :')

EDIT: a Triangle Adept + R Tomebreaker blue mage should also get the job done

Good luck!!! (or congratulations, if you've beaten it by now)

I beat it quite handily with nino, axura, reinhardt and celica.
Had to pay it twice cause i screwed up nino's positioning, but it wasnt all that hard.
Nino will take care of all blues in the map, and if you want to, she can also kill the green armors and cavalries, though thats what celica is for anyways.
Rein to kill the red mages, armors and cavs, and axura to make sure everyone is off range/in the correct position.

So I beat it with Gronnblade +Nino and full dancer team

Two blues (Ninian to fight the armors, Azura to give the finishing blow to Arvis) and one red (Olivia, who else).

Olivia was vanilla, four stars.

Ninian + Azura were wings of mercied, TA for Ninian.

Works well with a bit of repositionning.

With Desperation up (it comes after fighting the first blue mage), Nino can ORKO the red mages (but Arvis), all of the cavaliers.

If you have B! Roy, it's quite easy to beat him.
You need a unit that can kill the blue mage. A unit that can kill the red mage. A unit that can kill the blue cav. And some buffs for Roy (1 hone cav or 1 hone atk + hone spd).

Kill blue mage, red mage and blue cav with the units you prepared for them, then use B!Roy to kill the green cav and Arvis (thanks to galeforce).

Team that worked for me :
- B! Roy : Kills green cav + Arvis
- B! Lyn : Kills blue cav (she needs at least hone atk tho )
- Reinhardt : Kills red mage
- Titiana : Kills blue mage ( she needed a hone too)