Android Strategy Game UX Boost

I’m refining an Android/Web strategy management sport game that’s already playable, but its first-time user experience and long-term engagement need a serious lift. Your task is to give me hints abount... (Budget: €50 - €500 EUR, Jobs: Analytics, Android, Game Design, Game Development, Interaction Design, Mobile App Development, UI / User Interface, User Experience Research, User Interface / IA, UX / User Experience)