The dialogue are funny and really channels the character they are referencing well! It is also impressive that you are making the sound effects on your own.
Gameplay is fun, and the pebble stuff is really unique, but I am personally not a fan of the mandatory pebbles segments. The part with Ina is fine as she warns you to save 2 beforehand, but at most times it gets ambiguous if you are meant to use the pebbles on certain occasion or save it for later. Ultimately, it discourages me from using any pebbles at all even though it is such a cool mechanic.
Maybe this can be resolved by revealing the full map to the player and letting them plan their moves ahead beforehand, or have an NPC that refills your pebbles on mandatory segments (the tutorial described this, but I dont really see it used often)
Great job otherwise!