It will amazed you.
I feel graphics so beautifully, dominant in orange and futuristic color depth. But if I ask myself about comparing graphics, I still consider that Mafia II graphics still better, it more smooth and texture more deep specially about facial and contour of face also not incriminate your rigs much. In Deus Ex some of place give me low fps like in open space of towns and places that have crowd like Hengsha. 'Bout sounds and effect (specially Icarus Wing and Knock Out from air is so fun) that so good, I not have complain.
About gameplay leveling and difficulty, I thought it just right, many people complain about the first boss that so hard to beat and must restart the game, and yes I think if we can restart the piraxis leveling it would be great, but there's a trick that I do, I collect every piraxis and upgrade it when it really necessary and save the game before using it, even in the first chapter i don't upgrade much piraxis cause I know I can't undo the process, so collect, keep and use piraxis upgrade at risk time like in second boss, I upgrade electricity resist at time when battle clash and I defeat second boss so easily. The third boss and last boss is more easily than first and second, if I'm not mistaken we have fight 4 big boss along game and other just mini boss which you have many option to defeat it.
No much things I feel about bugs, sometimes I got error message and back to desktop but it just rarely happen. Sometimes I can;t read my personal message. About loading I thought its not so long to wait and it not take as long as you can make coffee or go to bathroom.
I play it about 10-20 hours, as RPG game it is really great value. At the end this game deserve 9.0 from me, I have great times play it and I'm sure play the expansion mission.