It’s not echoes.
What can be said about Metroid Prime 3? The developers sure loved motion controls. Every upgrade is a grapple of some kind. The game itself is alright. There’s a ton of backtracking, which isn’t anything new for a Metroid game, but it’s elongated by the fact that the world is not connected. Each planet is a self-contained level. Overall this game was fine, but probably the worst of the Prime games… for now. Who knows what they’ll do to Prime 4 before that drops?