Final Fantasy XV – Why Is Damage Taken While Attacking?

Okay going through the list here.

• No. Dodging will not stop if you keep holding the button.

• No. You can hold down the button to keep in dodge mode.

• No. You do not need to be locked on or facing the enemy to dodge.

• From what I can tell there aren't any undodgeable attacks (unsure on this fact)

• Depending on your weapon you may not be able to dodge for a short bit after attack. Larger weapons are prone to this such as the great swords.

• From what I have seen you can tell you are in dodge mode when your character walks around slower and seems to hunch over a little bit like if he was holding a shield.

I am pretty sure your problem is with larger groups of enemies, or enemies with large attack arcs. From my observation, while you are in dodge mode, you are not immune to being attacked. If enemies gang up on you while you are dodging other attacks you can still be hit. Same goes with enemies with larger attack arcs, you may get off the dodge, but an arc of an attack can still hit you. Your best bet for these situations is to simply dodge roll out of the area and not hold your dodge button.

There are, in fact, certain treasures that are used in quests or to upgrade weapons (also considered quests).

I found a list of all of these "Don't sell" treasures in the game here:

• Barbed Scythe
• Cactuar Needle
• Coeurl Whiskers
• Cylinder
• Dynamo
• Earth Gemstone
• Glass Gemstone
• Magitek Core
• Magnetron
• Metal Scrap
• Monster Claw
• Repair Kit
• Rusted Bits
• Sky Gemstone
• Spiked Armor
• Sturdy Helixhorn

Thus, it looks like all other treasures are able to be sold without worry.