Quite a fun game. Finding a new artifact is always good. A small note - if you don't know the stats of the enemies yet, try to memorize their toughness - you should be able to recognize that a green slime is weaker than a bat. That goes for finding paths, too - don't go killing everything in sight; you can avoid half of the enemies just by planning your path.
Great game. I like placing gems in a certain order that would benefit the most (slow -> mana steal -> shock -> triple damage, for example). Remember to try and fuse only gems that have the same colour, they get extra bonuses :)