List of features/changes needed:
1) Characters System/Shop
2) Powerup Manager Changes (Possibility to upgrade powerup's)
3) Cards Packs Shop System (To unlock characters, skins, powerup, upgrades, coins etc)
4) Ads & IAP System
5) Changes into the mobile controller script
6) AI system
7) Multiplayer Rooms List based on Photon (there is already all the multiplayer photon system behind)
8) Unique player ID system based on PlayFab or Firebase
9) Quests System
10) Leaderboard & Coupon Code based on Dreamlo: [login to view URL]
Is needed a general re-skin of the app.
I have over 4 years of experience with Unity, done a lot of coding for other people and I am qualified for almost any kind of work in Unity. Each of your project feature differ in cost, but the average is $25.