The quality of the game is very good. Controls we're simple after about 5 minutes of getting used to it. The voice acting is convincing and immersive. Graphics are nice and 3D looks good.
There are 5 stages of the story mode which is the main mode, the maps are average sized; you can easily reach the barrier on the edge of the map. Gameplay was fun and action packed, I enjoyed the flying missiles the most. Each stage has sub-stages and sub-quests that give a little extra to the formula.
This being said, the length of the game leaves something to be desired. I completed the story mode on normal in under two hours as there are 5 stages in total, each one being maybe 20 minutes long if you are thorough. I don't think the levels have massive replay value as once you have done it once, you know what happens since each level is static, but if you want, there's 3 difficulties to do the 5 stages on. There's also achievements, some which encourage you to replay levels more times than one would think enjoyable.
Out of 10 i'd give it a 7. It's definitely enjoyable and a quality game, but it is rather short and would be an excellent 10/10 if it were a fully fleshed out and lengthy cartridge game.
If you're tempted to buy it, go for it.
Also I'd love a Liberation Maiden anime series!