any idea why the long sword spirit gauge wont full? i keep hitting monster, but the gauge wont flash hence i cant use the spirit helm breaker combo

i found a new pet then it follow me on my current quest, but it did not follow me back to camp? and next quest dont have the pet anymore.

anyone using switch axe here?
there is 2 gauges on top right, one is the glow surrounding the blade, another 1 is the phial, any sifu know the difference? and which one have to be full in order to use zero sum discharge that do explosion

the monster hp only scale once when the 2nd player joined, wont scale anymore if there is 3rd and 4th player joined.

and it will only scale up not down even the hunting players down to 1