Pseudoregalia

• A ways into the game, you'll run into a place called Tower Remains with a locked gate and sign saying something about three suns needed to pass. It looks like a final boss door that requires collectable McGuffins to unlock, but the real one is actually a little ways inside the tower. There's a side path to get past the front gate and a mandatory movement upgrade inside to pick up.

• It is recommended to leave The Underbelly as the last area to complete, since it requires several techniques that can be obtained in other areas.