Well, I got around to playing this one today, and I have to say that while it feels better than the first one in a number of ways, it also feels like these guys didn't quite manage to properly nail the rogue-like formula. The replay-ability of this game is much lower than you'd expect, mainly because there's very little variation between runs. Dialogs end up getting repeated too often and there's not actually much variety to the gameplay itself.
You're basically encouraged to focus on boosting the attack stat among the first things, which quickly snowballs into one/two shotting the common mobs, which means that it's only the bosses that require any amount of thinking... and even that's not for very long. Even without the bonus memory fragments you can get once every run if you want to 'cheat', it won't take too long before the only thing that's a threat is the Demon Lord.
Now, this is a problem because you'll outpace the mobs really fast, and you'll have to rely on getting those fragments to unlock the scenes. Goblins have a LOT of fragments requirements, so it's just plain tedious unlocking all of the goblin scenes. The mummies are the second annoying one, because for some reason they just don't spawn that often.
Guess 'Last Evil' will retain its top place as best hentai rogue-like in my personal listing.
Oh well, guess we'll see what they learn from this and whether the next game will be better.