Update unity mobile game with new features

I need a few new features added to my game. - Add card attack combos. *When a card hits 0 hp, if any of its attack arrows are pointing to any other cards with 0hp, those cards will also change to the same color as the attacker. - Add Images, UI assets and Sounds *Add 10 designs/creatures into the game that can be generated. *Add menu and battle music to game. *Add sound effects for button clicks, card movement and attacks. *Add and update UI to match screen designs. - Add social login or use guest account. *Players can use email and password *Or social account, only facebook, twitter or google - Add leaderboard, this should be stored on firebase *ranked on win=3points, tie=2, lose=1 *Guest will not be shown on leaderboard - Player info stored on firebase. cards and leaderboard rank.