I really like the theme! I loved stargate back in the day.
As far as the gameplay, I did enjoy it, however, some of the roguelike aspects could use a little polish. Sometimes the enemies just popped up on me and I died SUPER FAST. Which, isn't necessarily bad but the weapons aren't super powerful and it's hard to defend yourself! I tried though!
I'm not sure how to find the symbols or baal's lair exactly or what timeframe you were expecting that to take... I may revisit this later, when I have less review to do!