I've not finished it yet but if you liked titan quest you will probably like it as well. Don't expect a new game: same mechanics, same graphisms but yes a true new adventure :)
Tacoma is very intersting for its story shaped in lots of small 3d scenes which you can play and rewind. Then you can mentally reconstruct the whole story. Also the design, especially the AR interface, is a clever guess of what futur may look like.
If it's not a beta anymore that's why I'm so harsh. The game's interface is very disappointing: no tutorial, tiny buttons with no design. The game might be nice but I don't want to play like this :(