the idea sums up to this : its hard to point out a proper event in mhw yet the games point can some times just be run around the map , get jumped by a monster and fight it . my suggestion is having it start when you get the red agro notification along side a monsters stunning roar effect and then have it end when slaying a monster coincides with the agro wearing off otherwise you could lose the recording when its just running away . if this werent made in mind for Expeditions aswell there may be a better way of doing it but this feels like something that would work with the game extremely well