Unikitty Rainbow Rage

This is a type of game of two goals in a game. Here, two opponents compete: a kitty who has to power up by making the same items on the playground below his position to form three or more simultaneously. And there is a black evil witch with a round face, who has to be overthrown. The witch's health automatically replenishes over time. Your task is to kill this baddie by hitting him with the energy available from the boosters and your friends (shown below in the playground). The witch can also shoot you when she has enough power to do so. Eventually, if you're not very good at gathering power, she'll kill you. But please resist her as you don't want to die. Are?