Waaaaaa, it's been a while since I got back again here, ahahaha.
Anyway, hmm, I see, haha, you know, the first time I tried the game, I didn't bother to do view the tutorials at all just for the kicks hahaha, but when things got complicated and I can't get past one of the stages, I started looking at the basic tutorials, then continued until I got stuck again on another level, this time, much more difficult because I don't know the advanced mechanics yet such as the Rush Count thing, until I watched some videos at Youtube and finally deciding to finish the remaining tutorials, and it took a whole lot of time, although I admit I did enjoyed the story, it's just the game play takes too long, and right now I don't got any plans on finishing my current Nightmare mode yet on the DS and the remaining (two) storylines at the PSP one. DX
In other games, yes, indeed, the other ones are much easier to get used to (especially Riviera haha, just grind at the practice mode every time you get a new weapon and you're good to go), well if you're looking for another STING Game with a good story line, with 5 different endings I think (which is easy to achieve), and with a very simple gameplay much like Riviera, you can try Hexyz Force, although it is for PSP. XD
I don't usually buy games though, I got traumatized because most of the things sold in this country are either pirated or defective haha, so I rely on homebrew instead (I can't stand it when I lose my savefile with no way to backup it after I worked so hard for that game, especially Pokemon Games on GBA), and since I don't got to earn my own money yet, I can't support them by buying their games even if I want to. :V
Right now I really, really want a PS3, there's like, tons of games I really want to play that is only available on that console. Ugh.