Changes:
- Small hints replaced by a full Tutorial Mode;
- Fixed a bug where mini-boss scores would not count towards the total percentage;
- Difficulty modes renamed;
- More shield points for solo players on the easiest difficulty;
- Default controls changed to make it easier for new players (controls can still be redefined to previous settings);
- Early areas restructured to welcome new players;
- Enemy targets are now marked;
- Small tweaks on some weapons.