- You can use the Shield dive from gun form, this instantly switches to weapon form.

-You share Burst level with anyone you are engaged with, so you can link burst an engaged ally to raise your own burst level.

- Any Aragami attack that spreads out from their position like a burst of energy(as if they exploded) can only hit you once, so if you get hit or block it the first time around, you can go for an attack even if the explosion is still there.

-Friendship and Beloved send members of the same/opposite sex into full burst when you are incapacitated, this does mean level 3 burst.

- No that is not your mind playing tricks on you, this game has jiggle physics

- When playing in a group (not assault) press F1 to bring up the chat, whenever you are at the caravan, F2 to bring up emotes.

-Weapons and shields can only be upped to +30
-Via story progression this can be upped to +60

-Remember to check when hope shows up to see if she has was you need since she sometimes has rare materials and such.

-You can achive a perfect guard by performing a shield dive at the right time.

-Any ash aragami's devour can be blocked with a perfect block

-Ra(the Ashborn that floats on a sphere)'s Devour can be blocked with perfect block. Normal block does not work though, blocking with perfect block negates the devour and staggers Ra.

- The beam attack starts with the Ra gathering 2 orbs in front of him, if someone shield dives into the orbs before the beam fires it will distrupt the attack (worked once, not tested further)

-When Ra devours someone and goes into burst, a gem on his chest opens up and is able to be hit for ~2.5X damage. You can use gun mode to hit this for massive amounts of damage and stagger him (all Ash aragami has this, however this is the only one with a known position)

- Like Ra, Nuadha's devour can be blocked by a perfect block, doing so distrupts the devour attack combo.

-Acala From Nuadha
-Alcyone From Glacial Ra
-Aker From Svartr Balmung
-Ako From Fallen Havakiri
-Angel From Zygote
-Arachne From Blast Spider
-Argyro From Blast Spider
-Avian From Chi-You
-Bahamut From Caligula
-Barghest From Anubis
-Beetle From Dreadpike
-Bennu From Ra
-Bushi From Havakiri
-Chimera From Vajra
-Corvid From Nemain
-Draconic From Gboro-Gboro
-Gaoh From Barbarius
-Goddess From Sariel
-Gore From Barbarius
-Gorgon From False Idol
-Hydra From Chrome Gawain
-Idol From Fallen False Idol
-King From Quadriga
-Knight From Borg Camlann
-Kubera From Namhaid Nuadha
-Lugh From Fallen Barbarius
-Maera From Anubis
-Mammon From Dromi
-Mars From Marduk
-Mot From Balmung
-Muninn From Fallen Nemain
-Ogre From Ogretail
-Oreb From Nemain
-Pardosa From Blast Spider
-Pixie From Cocoon Maiden
-Ronin From Havakiri
-Satori From Nuadha
-Serpent From Hannibal
-Shrine From False Idol
-Simian From Kongou
-Sol From Ra
-Surtr From Axe raider
-Troll From Axe raider(by thegingerperson1234)
-Vulpine From Kyuubi
-Yama From Balmung
(will add more)

That includes anything that might be wrong or perhaps Aragami material you know where to get.
If you can't find the Aragami material you are looking for also please put it in a comment, and i'll make an effort to try to find it and add it