Can't imagine not owning it.
I'd like to touch on a few things I questioned about the game before I purchased and played it:
The Sacrifice System:
The game, redacting a lot of details, enables you to 'choose' how to do deal with fallen enemies, either saving them, giving you a small health recovery and experience towards raising your health entirely, or sacrificing them, fueling your hunger for all things evil and replenishing uses of your magic abilities, and earning experience towards raising your attack skill. At first I was concerned that this system would be too weighty, and I would be forced to be evil if I wanted to focus on damage, but this is not the case, and the game perfectly wraps it all together in a way that lets you make these decisions on the fly with, often, no consequences. This system really could not have worked better.
The Ability System:
Unlike Monster Hunter, where you have a clear-cut weapon your bring with you, in Soul Sacrifice you bring a number of magical abilities which may only be used a number of times. To make it clear, it is easy to replenish these abilities during battle, either by sacrificing or by using one of the replenishing objects scattered around the landscape. This system also works perfectly, as it in no way limits gameplay like I feared, but instead promotes smart gameplay, movement around the map, and sometimes, the occasional sacrifice.
The Maps:
Here's a kicker, Soul Sacrifice does not feature expansive, free-roaming locales like it's Monster Hunting cousin. Instead it features an abundance of perfectly sized battlefields that do not feature any exits to other areas. At times, this can feel a little claustrophobic, and if you crave strictly adventure, this may not be appreciated, but with how beautiful and captivating the landscapes are (some featuring towering Greek statues, mystical objects, warped nature scenes, and twisted cities), it is unlikely that you will find the environments of this game lacking anything. Something to consider.
The Style:
Okay, this was never a concern for me while researching the game, but I have to say, the dark, dreary style of the game really, really appeals to me. The game is set in a world where everything from the very beginning is not 'peachy', and even the "monsters" in the game are almost all warped by some form of greed, lust, or pretentiousness for being the 'popular kid' in high school. How's popularity for you now, specific-kid-who-can't-be-named? Oh, administrating NASA's mission control board, getting paid hundreds of thousands a year? Sounds really not-lame! Psych! You got what was coming to you! ...Now, where was I?
The Story:
Don't worry, I promised I wouldn't spoil ANYTHING, and I won't. I will simply state that, while researching this game, I never heard anything about this game having an amazing story, which is surprising, because one tenth into the game and it had already touched my heart with more emotions than I knew existed in the black pit that lingers in the center of my chest cavity (needless to say, I prepped myself for this game in some dark ways). Whether story is or isn't important to you, this WILL be a plus, because you can't ignore a game with such mystery and passion like this one. The story can be semi-dark at times, so someone very innocent to things like the words "soul" and "sacrifice" being in the game sentence together may want a more light-hearted game, but the game isn't creepy about it (and thankfully doesn't touch on devily stuff), and certainly doesn't force you to draw pentagrams on your chest, in game or otherwise.
The Difficulty:
Not too much to say here. The game's difficulty stair-steps perfectly, and never corners you with missions that are too difficult. If you can play Monster Hunter, you can play this, as in many cases, this game requires a lot less back-tracking and grinding than Monster Hunter, not to say the potential to improve every aspect of your character isn't always present, as it is.
Hopefully this is useful to make someone out there considering to buy this game GET UP AND BUY IT ALREADY! ...Sorry, lost my cool. Anyway, I would recommend this game to anyone (if there's a better PSVita game, I haven't played it), and with multiple free DLC out for it on the PSN Store already, this game will always draw you back with the promise of pulse-pounding action, heart-wrenching story-lines, and sacrifices. Lots of sacrifices.