Me and a friend are about 6 hours in on LAN, yes we have had several crashes but the key is to make the game and let it stand open for a min or 2 then join in to get past initial crash. I read the titan quest forums and other people are having similar crashes and they actually bought it. Other than the few bugs the game is cool, great graphics, awesome skills/tree(multiple masteries), tons of items, fun to hack and plenty to slash(lots of enemies, fight 5 at a time or more), plenty of side quests that you can get skill points/attribute points/exp/added resistances etc from, also shrines to boost health, exp, regeneration, skills and more
:wonders why games nowadays cannot release and not have to be patched in the first day: