This game has great potential, but it needs a little more work regarding the User Experience.
These are my suggestions:
- Add the possibility to mute or lower the music/sound effects.
- A little squeeze animation on weapon reload, to briefly attract the attention of the player.
- Don't restart the intro every time the game is open.
- Pause in-game with resume, go to the menu and restart options.
Apart from these little additions, the game is beautiful, efficient and fun to play.