NECRO!!!!!!!!!!!!!!!!!!
They're brilliant, free flowing combat experiences. The second one has genuinely good detective work and is such a slick experience I'd highly reccomend them both.
EDIT: Oh yeah, reason for posting
There is a 3rd one arriving soon. Should be more of the same great gameplay, refined further and now with multiplayer. Arkham Origins, released 25th OCtober 2013 for £29.99 on steam.