Newbie Helper:
Did you forget your mission? You must defeat the Gremlins and recover the Blue Gem they stole.
To target a Gremlin for attack, simply move your cursor on top of it and click the left mouse button. The cursor will change into the shape of a knife; when that happens, click the left mouse button again to begin attacking.
If you successfully return the Blue Gem to me, I will give you reward!