Tomb hunting is always a dangerous endeavor, but with your previous experience, it shouldn't be too difficult. Once you enter, you find yourself in a central hub area, with many doors numbered. You'll need to collect all the coins and treasure chests from each wing of the maze. Can you collect 100% of items and escape alive?
Move left/right - Left and right arrow keys respectively. Jump - Spacebar. Restart level - R key. Go through doors - Up arrow key. Crouch/interract - Down arrow key.