About the umbrella mechanics, I explain it in more detail in the game page but in a few words there's this energy bar that gets charged whenever you defend and consumed whenever you attack and when the energy bar is empty your attacks become useless. Also, to add up to the difficulty, health points are scarce and there's only a few of health packs around the whole game, usually well hidden. These two things should in theory invite the player to be more strategic in battle (so the player doesn't attack constantly, forgetting the defense state at all) and to explore the world around. But then, the game is pretty much broken so it doesn't quite work.
Anyway, thank you so much for the support, we really appreciate it! And even though the game didn't get finished in time, we're thinking of getting back to work and finish this little project so everyone can enjoy it properly!