Am on my second playthrough now, is more highlights from an early part of the game. Gives you a taster of freeflow combat which works brilliantly.
Using the grappling gun to sneak around the area until you can take out Zsasz without him realising you're there (he's holding an arkham security guard in an electroshock chair)
Then it jumps to another area where there's about 7/8 guys in a large multi-tiered room and the aim is to take them all out. Mainly by using the gargoyles around the ledges.
It ends on a cliffhanger where it's jumped to you catching up to the Joker and he releases an unnamed inmate on you. It may be there version of Amygdala but I'm not sure there.
You get to view a couple of ingame trophies, and unlock a few character profiles. The Jokers has a couple of recordings from his therapy sessions where he jerks around the psychologist working on him.
Only downside so far is the lip-synch is a tiny bit off. Aside from that it's amazing, beautifully smooth, looks gorgeous the combat flows brilliantly especially taking on multiple opponents who surround you. Plus the counter animations look great and sufficiently brutal without being fatal.
Plus if you die you get the joker looking down at you against a black background where he makes one of several quips.
Had it on pre-order anyway but after playing the demo I'm completely sold so far this is completely deserving of the hype and I can't wait to be able to get to a stage where I can play with gadgets.