From left to right the Slipgates are Dimension of the Doomed, The Realm of Black Magic, The Netherworld, and The Elder World. Once you chose your difficulty, you must choose the episode you wish to play. On the Hard passageway there is a Lava pit to jump over. The three different levels change the number and type of enemies encountered. Select your Difficulty via walking through one of three corridors into a Teleporter at the end, marked from left to right - Easy (for rookies), Medium (For beginners and trainers), and Hard (For experienced players). The Axe is melee, while the Shotgun is ranged. Welcome to Quake! You have two weapons at your disposal when the game starts.