TQ: Immortal Throne - Reviews @ 1Up, Strategy Informer

The first couple of reviews are in for Titan Quest: Immortal Throne and it seems like Iron Lore may have hit the spot.  1Up is first up with a score of 9/10:

To paraphrase a famous quote, I don't know if I can define "good gameplay," but I know it when I see it. And in 2006, I saw it for many, many late-night, eye-bleeding hours in Iron Lore's ridiculously addictive Titan Quest -- an action-RPG that, like many games before it, stole blatantly from Diablo II -- but unlike the others, Titan Quest utterly nailed that same elusive, indefinable magic groove that made D2 a classic. Put another way, Titan Quest was the first Diablo clone that deserved to not be labeled that way.

Now, Iron Lore returns with Immortal Throne, the first TQ expansion pack, and it's an essential addition -- both to vets and to new players -- fixing nearly everything that needed fixing in the original game, while adding a buttload of new content. Nothing here is mind-blowing...but once again, all the smart choices, cool options, and creative little touches prove that the developers know exactly what they're doing.

Strategy Informer's score is 8/10 and they similarly recommend the title.  Here's a bit on graphics:

Graphically the new underworld location really allows the Titan Quest engine to shine. Not much has changed technically since the original instalment aside from a few new advanced post-processing effects (it is less than a year old after all), but the level of artistry seems to have taken a definite step forward. It may seem a strange decision at first to present Hades in a series of murky blue/grey/green colour schemes rather then the traditional fiery depiction, but in doing so it allows the new content to take on a more diverse and ghostly appearance. This fits particularly well given the amount of spirits or ‘shades’ wandering around the environment looking for a way to gain passage to Elysium or just to cross the River with the hope of being judged. The lighting effects in particular are superbly atmospheric, with a genuine sense of menace coming from some of the building architecture and the angular, piercing shadows cast as a result. Texturing throughout is excellent and the new monster design (some 20 in total) is good, with some genuinely interesting additions to the cast of foes.