There are fixed or rancom encounters, but it plays like a hack and slash game in those.
Needs a Better Title. A game which is normally just walking around and exploring on the field, but when the Random Encounters or Fixed Encounters happen, the action is freeform attacking instead of involving menus and taking turns. Yet when it's over, you get the post battle bonuses, and you go back into the non-battle field. These happen whether the game is an Action RPG, or Hack and Slash game.