[New] Animated background: Spacestation

[New] Mission progress display

[Improvement] Enemy missiles now have different sprite and trail.

[Fixed] Audio values now display correctly on pause menu.

[Fixed] Boss audio now can be correctly controlled in the options (via SFX)

[Fixed] "Clear all levels in run X times" achievements.

[Fixed] Error that appeared sometimes on the language selection.

[Fixed] Death animations now trigger at the right time.

[Fixed] Bally no longer has all stages active on the last stage.