The main weapons to inflict this with are the Hammer, Hunting Horn and Charge Blade (using the axe form's
phial attacks), although other weapons have certain attacks which deal impact damage, such as the Great Sword's shoulder barge or the Sword and Shield's shield bash.
Not exact matches
Impact
Phials —
Attack power bonuses from effects other than that of the Artillery skill (for the explosions) were decreased.
Impact
Phials — The
attack power bonuses from effects other than that of the Artillery skill have been decreased
Charging these both up, and then further charging your
phials, will give you the highest damage output in axe form you can get, with a very satisfying Elemental Discharge
attack should you land it.
Instead press R2 during the animation and you'll see the
phials empty and your shield icon begin to glow pink as you pull out of the
attack.
One is an Impact
phials which uses explosive damage to stun, and Element
phials will dish out a heavier
attack using the weapons particular element.
Attacked will consume one
phial per
attack.
Then switching the
phial to the sword which can then
attack faster to increase damage.
Apparently the blade can be equipped with different «
phials» and hold a charge to create boosted
attacks.