Control Scheme is different...but better. one thing I like about this demo is the fact they included cutscenes similar to MGS:PO, you'll get used to the controls in the tutorial which is the first mission....although the instructor does waffle alot in japanese. Also this works on 5.50Gen-B if you work the version file abit...

It's from an unknown source, but it's said to work

release:5.55:
build:3230,0,3,1,0:builder@vsh-build6
system:52556@release_555,0x05050510:
vsh6434@release_555,v52629@release_555,20090608:
target:1:WorldWide

put that in the version txt and enable version.txt in the recovery menu