In a series of E3 2009 live video shows, 1UP chats with Ninja Gaiden Sigma 2's producer, Yosuke Hayashi. The PS3 demo featured the first stage in Ninja Gaiden Sigma 2.

Tough as nails, solid as a brick, and as annoying as a rooster at dawn—this list has it all. Here are the hardest PS3 games.
This list has nine games....
And if these are the "hardest", that's a bit alarming because I'm pretty average and I've managed to 100% more than a third of this list (Demon's Souls, Dark Souls, Hard Corps Uprising, and Catherine).

Grab your katana, and slice your way through this list featuring the best hack and slash games the PlayStation 3 had to offer.
Dante's inferno... an excellent GoW inspired game. So sad the sequels will never be.
heavenly sword was such a short, but amazing game. that game should be prime material to be made into a download only remaster.
I really enjoyed Castlevania, but struggled to get into it again reattempting it a few years back. I still think it does another of things well; story, presentation, level varietily and art style at least. Gameplay maybe has not stood test of time unfortunately which makes it a chore to get through.

In the conclusion to a three part series, CV takes a look at the most recent Ninja Gaiden games, for better and for worse.
They need to make a true sequel to Ninja Gaiden 2, that was the most satisfying combat I've experienced in a hack n slash game.
been playing 1&2 on and off since they were released. I usually will play until I get frustrated then take another year off lol. Nver tried 3 or the 4th one even though they are in my backlog.
I tried to go back to Sigma but good god those controls are just insufferable. Couldn't do it.
Man, why did they have to go all softcore and replace the blood sprays with that purple mist crap? I see there's still blood, but it's not deliciously excessive like in the original NG2. Seems so toned down.
Thank you 360 owners for trying the beta for us ;)
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hahahahaha
Who is playing suck. No Counter Attacks no On Land Charge.
What happen to blood effects they tone some of the coolest stuff down, I want it to be like NG2.