Solid 8/10 from me. They took the gameplay in a lot of interesting directions and most of them worked out way better than they had any right to. The only mechanics that I thought didn't work well were pointing at the screen to enter first person/preventing movement in first person/requiring first person to fire missiles. Oh and I guess the pixel hunting segments were kind of annoying. Aside from that, the classic Metroid movement options and powerups were all implemented really well and put to use in a lot of really interesting environmental puzzles. Combat-wise the game did a really good job making you feel like a badass with powerful attacks and flashy moves, while also throwing in hard-hitting, fast-dodging enemies that forced you to strategize and react to their movements carefully in order to actually hit them without taking damage. I did wish the game opened up with a bit more opportunities for exploration prior to the end game. Didn't care about or pay much attention to the story.