(The rating is JUST for the GAMEPLAY ONLY. Almost everything else about this game is a 4 out of 5 for me. The maps are clearly not finished, are some objects were left in the wrong layers, scoring a 3 out of 5.)
It's REALLY, REALLY is too early for me to be giving a review for a game that's currently (at this writing) at its first update since the initial demo, which is 0.2.)
The pros.
-Artwork is a hit or miss, but for me I do enjoy not just the scenes but also the sprites for the females. That said, it appears only the Succubus and Angels have one body type (almost a foreshadowing, but this is far too early to consider). That said, you can opt out and not give any succubus what they want (which will give a bad end despite showing a scene).
-The game does contain a pretty decent, even if not original, basis. The character you play in the main game is the ancestor of the protagonist in the first few minutes of the prologue, whom was saved by an intergalactic naval force that is currently losing a war against the denizens of Hell. And through the Animus, clearly making your savior to be Abstergo from Assassin's Creed, you will witness past events through the actual protagonist's eyes in a very reaching attempt to turn the tide, events that are now uncovered thanks to the machine revealing memories through your DNA.
-The battles themselves are fairly difficult. Which was fine during the prologue, where you had a party with you. Despite all the abilities and movesets being closed off from you, an average player should manage themselves through if they had taken the time to search around and pick up items that provides heals. However...
The cons:
-The succubus battle system is... annoying, veering close to having artificial difficulty. Unlike in the prologue, where you had a party, you are alone BUT at this point you are granted access to magic that you have to pay to unlock. The crux to this, however, is the fact that using spells are too expensive for starters when compared to the very limited MP resource, especially when you need to have iron will active at all times if you do not want a succubus to hit you with a Succubus Temptation. A move which immediately goes into a brief sexual scene (if you use the gauntlet's iron will, though at that point the buff does not remain as it doesn't cost MP at this instance), which will heal her tremendously in comparison to the damage you can dish out as well as harming you (which makes sense, lorewise).
-The item that heals you of paralysis is useless, utterly, as you are by yourself. The paralysis debuff causes two turns to be skipped, instead of usual RPGs where there's always a chance of whether or not you can act. While the debuff can miss, it can also be renewed. In which case, the paralysis's duration extends, leaving you vulnerable to further attacks that can kill you due to being utterly helpless. The only benefit is the fact that the skip turns does not count toward Iron Will's duration.
-The save area(s?) is too far away from the forest dungeon (perhaps there is one in there, however the current Succubus system can discourages someone from even being TOO adventurous to try to find one, almost encouraging them to back track JUST to heal). Which makes the experience more of a drag instead of the player being wary against a dangerous group of foes.
-As mentioned before, the current spells cuts too deep in the MP resource, with the damage being too low to be cost effectively with no items to replenish it, you are better off just attacking, use Iron Will after three attacks, with an occasional item heal. Which makes the current iteration of the skill tree almost useless, only putting money into it so you can get the stat boosts, not the skills AND making it so the AOE specific spells a wasteful investment. This bogs the experience in the gameplay tremendously.
I know that the game creator is accepting feedback and thus tweaking the combat system. Though personally I would have made the game far too easy, even if it was just to ease the player in due to the change from having a party to fighting mini-boss succubi. So I am certain that this review will be invalid quickly enough and thus will need be changed when the next update is release.