9.7/10 from me. It is that good. I try not to inflate my scores or anything but generally I only play games that are worth playing.

I've kept all the old ratings for the first reviews I've done, everything up to DMC3, but I've updated the scores under the new criteria. 

The old criteria was scoring each game based on its gameplay, story, graphics/audio, balance.  Didn't add any weight to anything but balance/weight, so a game like Shinobi 3DS which had very little storyline got hit hard when I graded story/gameplay equal.  Gameplay was a combination of gameplay/design(so gameplay score might be a little higher with design seperated.)  Graphics/audio also hit all these games pretty hard with how much weight to the system they had as well.  

Anyways, here are the new scores with the old scores beside them.  That way the scoring is same as the rest of the reviews and any future reviews. 

X-COM Enemy Unknown 8.75/10 (old 8.5/10)
Shinobi (3DS) 8.75/10 (old 6.25/10)
Shin Megami Tensei IV 7.75/10 (old 7/10)
Ninja Gaiden Sigma 7/10 (old 6.25/10) 
Ninja Gaiden Sigma 2 7.25/10 (old 6.5/10)
Devil May Cry 3 Special Edition 8.25/10 (old 7.5/10)

Added Lords of Shadow, Lords of Shadow 2, and Lords of Shadow Mirror of Fate.

Castlevania: Lords of Shadow
Castlevania: Lords of Shadow 2
Castlevania: Lords of Shadow Mirror of Fate

I'm playing through other games, but since I did the Lords of Shadow reviews, I thought I'd do reviews for the rest of the Castlevania franchise, excluding certain ones that didn't come to the west. I might still do a review for Haunted Castle, but not Castlevania Nocturne in the Moonlight.  I'm going to replay through all the games so might two weeks to a month before the reviews are posted.