Gameplay adjustments

1. Game Tutorial vs Game Introduction (Gamification Achievement Systems Tips)
2. Gameplay Difficulty vs Player Skill Level (Gamification Player Progression Tips)
3. Game Update vs Game Patch (Player-Centric Gamification Tips)
4. Game Playability vs Game Accessibility (Gamification Achievement Systems Tips)
5. Avatars vs Characters (Gamification And Bloom's Taxonomy Tips)