Did a bit of digging and seems that this might be working OK now. I bought it for less than a fiver with all the DLC on cdkeys. Installed and I'll give it a try tonight. Can't really go wrong for less than a five.
Handling is a bit iffy at times and I've got it stuck more than once. I do like what they did with the "predator" sections. That was pretty inventive although again, the handling did get in the way at points.
This is a great game, about halfway through the main story and I'm loving it. The side quests aren't bad either aside from the usual riddler spam. There are some lovely little touches in it too where batman is clearly struggling with his sanity somewhat what with joker taunting him within his mind. The faces on statues and billboards sometimes are replaced with jokers gurning mug you turn away and its normal again. He's also said some genuinely funny dark things that has me giggling.
My main marker for a good game is simply this: does the game leave me wanting to play more when I have to turn off the pc? The answer is a resounding yes in this game.
Anyone out there that was a fan like me of the other games but held off on this due to the launch issues can rest assured it has been polished to a high shine since then.