so, the game is pretty high quality but there are some problems. the gameplay is kinda fun but one of the problems is how it is a phone game, you are expected to use your thumb to move the heart but that covers the screen making the game harder plus the speed of the heart and how you have to move your finger up and down for the most tiniest move.
also, the healing. i think its pretty little because while the falling knifes is easy kinda, the second attack is way more harder to leave unscathed and it happened to me that i wasted my heals just to be left with the same little heal from before after that same attack repeated 4 times, a good thing would be that you dont get in more troubles that you already are just because of healing.
overall, the game is really the best of the best but even the slightest detail could damage the impressions of the supporters.
i think for the second point, another way to fix it is that after healing the next attack speed is at half.