
Z key gives normal shot.
The blue bar on the right fills over time and when it's full then your ship can absorb bullets by pressing X key.
Absorbing bullets fills the red bar and each time it's full you can launch homing laser barrages with the C key.
Laser barrages can be stored by filling the red bar repeatedly and when 3 are stored then filling the bar again gives an overload bonus which recharges your ship's shield.
Download page:
http://www.freem.ne.jp/game/win/g02698.html
It's super-fuckin'-cool honest!