Well I just finished my Neutral Route run, with a completion time just under 58 hours. I really wanted to complete all the Challenge quests, but by the time I was finished with the meatier content of the path, I said screw it and just ran to the finish line.
Here's a small album of my final character build, demon team, and skill sets if anyone is curious.
I'd have to say that as a whole, I tremendously enjoyed the game. The only downer for me was the lack of difficulty after you get past the beginning of the game. I don't know if that diminished difficulty came from the way I built my character, my play style with the rest of the demons on my team, the way I built my demon skill lists, or a combination of all of the above, the game was overall a breeze outside of enemies spawning under me after finishing a fight.
I'll see how Expert on New Life Restart NG+ or how the superboss DLC plays out, hopefully some challenge sprouts from there. I know I'm going to do a Magic/Agility build, not sure whether I'll be Chaos or Law.
I loved the soundtrack, the way Neutral played out, the "heavier" story and character elements, the flow of battle, the way character progression functioned, and graphical presentation.
Overall I'd give it a 9/10, and it's definitely my GOTY so far.
I just bought SMTIV and Soul Hackers, which one should I play first ??
SMT IV is way more enjoyable. Play it first.