grinders feel slower imo but i dont think it changes.
Also, on easy you get 9 grenades. On normal its 5 and on hard its 3. same with rocks and such.
on an unrelated note, while i was waiting around enjoying the scenery, i think i must have spent 15 minutes just pegging bottle caps at bats haha. I like the neat little worldly interactions
Also,
boom bats got cut :O. No idea why though.