It's a Square-Enix game, so of course it's gotta be presumptuous!
The game offers a 12-level romp as well as a 'chain-kill mode'(Free DLC update) and four playable characters at a base level, as well as Score attack and fifth, overpowered, character as paid DLC. The DLC extras feel a bit... cheap, both as ways to nickel and dime the player(Even if they only amount to two dollars) as well as the overpowered extra character considering how hard the game is.
The game is meant to be played by four players at the same time. I played the entire game as a co-op duo, and on the latter stages we had a bad, bad time. Anything short of four players will result in a very grindy, unfun experience. It's not a matter of skill when you are peppered with bullets and lasers left, right, front and center and enemies take so many hits to go down. We had to resort to cheeseing the game by exploiting respawns. And the last level is an absolute nightmare that has you fighting every single boss again while going through the same repeated areas. Disgusting.
I did not like Moon Diver. I didn't even have fun writing about it. At least I can commend the developers on trying to imitate such a fantastic game as Strider 2, as there aren't many games like it. But the game is plagued with bad level design, clunky controls, repetitive and unsatisfying gameplay and a very unfair difficulty setting. My advice? Stick to Strider 2, stick to Strider, stick to Osman, but forget about Moon Diver.
2.5 out of 10