This is the game I have played the most on LIVE, and I think it rocks! It would be nice to compile tips and strategies of this lost gem, if anyone is interested.
I´ll start with a few no brainers that most people seem to be forgetting:
Buy resurrection the first round! If everyone has rez the team might be considered doubled in size.
Don´t buy a weapon the first round! Starting money should be put into the character build, not a dropable weapon that the enemy might get their hands on.
Elves should be the primary healers, given their high magic and good speed. Be on the spot and heal in seconds.
Always rush the artifact. Better to fall back if the extraction is well defended. Know the routes for rushing on every map.
Dwarves should be the primary troll-slayers. They remove the trolls natural armor and if they get to close the troll might have trouble targeting the dwarf.
Humans are good scouts. Get enhanced vision and wired reflexes and they can control all of the maps logistics.
