I know a lot of people that have the game, and you're the only person to give it that much of a bad review.
If you can't do any of the single life challenges, then i'm sorry but you're a bit rubbish at the game then as i've just done Challenge 02 first time.
Sorry.
A shoot-em-up is all about the gameplay. I don't play shoot-em-ups for the story, or for the ending. I don't think any hardcore shooter does tbh.
How can you say that the game has good gameplay then basically go on to say it's a crap game? You're not really making any sense. It sounds to me like you've just done adventure mode on normal, and saying 'Yay, that's it, i've finished the game, i'm gonna sell it', in which case you're completely missing the point of the game, and of shoot-em-ups in general.
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I haven't played much of it as I only got it yesterday, but from what i've played of it so far, it's pure excellence in a DS cartridge. There are 3 difficulties for Adventure mode, which are Normal, Advanced, and Expert, which are basically Easy, Normal, Hard.
Adventure mode is basically your standard mode of going through all the stages with a certain set of continues, to get to the end. Beating a stage in adventure mode will unlock it in arcade mode, and THIS is where the fun is to be honest. No continues, single stage, score attack. Beating the stage gives you a nanocode to put on the official website and get yourself on the internet rankings.
You then have challenge mode, where you're given a certain objective to finish on each level, such as beating it in a single life, or getting a certain obscene high score at the end.
Perfect practice material tbh.
Then there's the multiplayer, which is single cartridge only. You can pick from four multiplayer only stages, and it's basically a timed match to see who can get the highest score. I have yet to try this.
Graphically it's absolutely superb, one of the best looking DS games available at the moment, if not the best. Full 3d, but with tiny bits of slowdown once the going gets hectic. The levels really do look superb, with my favourite so far being the Sunahara Desert.
Sound seems pretty average to me. Nothing really stands out though once again, i'm a fan of the Sunahara Desert music. Blasting things, bullet sounds, etc. Rock on.
Gameplay and scoring is what I love about this game. You have four weapons which can be cycled through using the touch screen. Your standard forward firing laser/vulcan, a side shot, a semi-homing shot, and a lightning lock-on beam. Each of these have their own respective 'Secondary fires' which drain weapon energy.
Weapon energy is replaced by shooting down an entire wave of enemies, and collecting the blue coin that they drop. However, if your weapon energy is on full when you pick it up, then you get a score bonus... These stack. They can be chained together and they multiply for every one you collect on full energy. Thus, if you can go through the level without using your secondary fire, and picking up as many blue coins as possible, it's score aplenty!
Then you've got the end of level bonuses, smart bomb count, ship count, valor bonus, etc...
We'll see how long this lasts me, but for now, i'm still trying to go through the game on Advanced difficulty, and i'm pretty damn addicted to it.