Donnerfaust idea list

As I told earlier I keep track of my ideas for the game, so I thought that I could as well release he current list here, just to show what I am talking about. Here are the current ideas that I have listed for Donnerfaust. Please notice that the list is not in prioritized order.

• Scoring system. System to give player scores based on performance. Combo bonus, multikill bonus, etc.
• Highscore list. List to keep track on highscores.
• Level progression. Game will be easier at first, but gets harder as time goes by. Different enemies, etc.
• Different unlockable AA-guns. Guns with different damage level, loading time, blast radius, and bullet speed etc.
• Special weapons. Special weapons that has limited ammunition.
• Friendly AA-machinguns. In tight situations, player could call for AA-machinegun vehicles to give additional fire support.
• Friendly radar. Player could set a radar unit that will inform player about incoming air crafts.
• Bonus targets. If player destroys these targets they could give player a bonus score or bonus abilities.
• Enemy formations. Enemy aircrafts would attack if different formations. Line, column, wedge, diamond, etc.
• Enemies can attack. Enemy can shoot player’s AA-gun, if it gets close enough. Adds more pressure to the game.
• Google play integration. Enables the online highscores and achievements.

Most of the ideas listed above will be included to the game, but some may get discarded if for some reason I don't find the suitable for the game.