Huge Ikaruga fan here. I really enjoyed this, it feels great feeling that I have to re-learn to play Ikaruga in another perspective ! My only critique is this one: you never know where your crosshair is because it is independant of the camera, and the boss isn't always centered either, so it makes aiming very difficult (at least for me). In ikaruga your aim is your position so that's not an issue, but for your game maybe consider amore classic third person perspective ? So the player always knows they'll shoot in front of them ? Anyways it is great, and kudos for the intro cinematic and overall polished art !