Just finished this game on Hero mode. I didn't go for 100% completion, but I did all of the major sidequests and stuff without ever opening a walkthrough.
Here's some spoiler-filled screenshots that I took throughout my playthrough
http://www.flickr.com/photos/113754103@N04/11827047776/
http://www.flickr.com/photos/113754103@N04/11826714504/
http://www.flickr.com/photos/113754103@N04/11827302606/
http://www.flickr.com/photos/113754103@N04/11915174604/
http://www.flickr.com/photos/113754103@N04/12002670566/
http://www.flickr.com/photos/113754103@N04/12001911405/
http://www.flickr.com/photos/113754103@N04/12002995696/
http://www.flickr.com/photos/113754103@N04/12003910796/
man... my love of this game is totally renewed. I always seem to forget
exactly how great this game is until I go and replay it again.