Unforgiving. Both you and your umbrella are one-hit-KO hitboxes, while even trying to be as resourceful with your umbrella as you can puts you at risk. Very dynamic game mechanics. The mental calculation is strong here.
If there's one thing (aside from having to start a level all over again if you die) the strong gravity and swift movement speed really makes precision movements difficult, especially in the vertical sense, and especially when bullets enter the field of view while you're mid-jump.
Thoroughly enjoyed this though.