Have you noticed (if you have Metroid Prime)that the Light Beam and Dark Beam are very similar to the weapons in Metroid Prime? The Light Beam is like the Plasma beam vaporising enemies.The Dark Beam is like the Ice Beam and the Wave Beam freezing enemies and shooting dark matter in a circle.Power Beam is a little different when using the Charge Beam.You should (im not saying do it just to compare it)compare the weapons in Metroid Prime 2 Echoes with Metroid Prime.