Abandon hope, all ye who enter here.
The game is set in the Crusades; Dante is busy killing in some place near Jerusalem. But because he's unskilled, he gets stabbed and dies, but fights off Death and takes his scythe. Then he goes to hell (literally) to get back his wife Beatrice from some smoky-hazy guy, who, I don't know, might be Satan or just some demon; I haven't read Divine Comedy (didn't have the patience for bad poetry) and I didn't play Dante's Inferno to the end (didn't have the patience for bad gameplay). So this Satan/demon bloke takes away his waifu for some reason... the game repeats the same cutscene where Dante vows to Beatrice not to have any 'pleasures of the flesh' until he returns from the Crusades... so what did he do? Adultery? Killing? Like I said, I wasn't interested enough to find out.
So the story is pretty bad. Dante is a weak-chinned, unlikeable jerk, and the game never really manages to make you care about what happens. I have played plenty of horrible games to the end just to see how the story ends, but in this case I just couldn't be bothered. I don't know if it's because the base material for this game's story is awful or the game struggles to settle into its twelfth-century setting. Probably both.
The sound in this game is low and is only hearable on the maximum volume both in-game and with the PSP speakers, and it's not memorable either. Some of the music tracks were almost, but not quite, listenable to by a person with functioning aural cavities. The voice acting is just plain awful - especially Dante's.
The graphics are very good and the only plus point in this entire game. This game actually surpasses the God of War games on the PSP because they had an awful framerate, but the visuals in this game are undeniably excellent. The CGI cutscenes were decent too.
The gameplay is identical to that of God of War - so basically, it sucks. A God of War fan might enjoy mashing the square button and pressing triangle only for the heck of it once in a while, but I don't. Like God of War, you can upgrade your abilities and unlock new attacks with 'souls' collected from defeating enemies. I hated the gameplay in God of War, therefore I hate the gameplay in Dante's Inferno. You almost can't tell them apart.
It's a very easy game, since the enemies are so stupid you barely ever have to guard. Unlocked combos don't have crushing power like you'd expect - indeed, some of them are even weaker than the attacks you have at the start. The combo system is broken - if you take a hit, you sometimes don't get knocked out of a combo, and you still build up your combo even if you repeat the same move over and over.
An avid God of War fan might enjoy Dante's Inferno, but I didn't. In my opinion, it's slightly better than the abysmal God of War games on the PSP, because at least the graphics aren't technically busted. But the visuals do not make this game worth playing. The horrendous gameplay, presentation, story, voice acting and music take care of that.