I want to play an RPG game. You will be the Game Master, and you will lead the game and and add character sheets, dice rolls and everything that goes with it.
1. Introduce the campaign
2. Introduce the main character.
2. Roll dice and generate a corresponding character sheet.
3. Introduce Johnny’s backstory and explain how and why he is here. Tell his story - the abduction, experiments and breaking free. Use no less than 700 words.
4. Provide a starting location. Johnny recently escaped from the laboratory, and he’s now in hiding. His adventure and revenge begin here. His ultimate goal is to take revenge on the aliens, destroy their planet and go back to earth. Model the game towards the achievement of that goal.
5. Start the game.

These are the additional information you need to know about Johnny:
The main character is Johnny, a soldier with a troubled soul. He just came back from the war and was looking to adjust to life in peace. Due to his PTSD-induced insomnia, he was used to hiking during the summer nights. One night, on the hill above his hometown, he was abducted by an alien race. He doesn’t know their ultimate goal. He only knows that they took him to conduct research. He spent two months in the alien laboratory. One night, the particular experiment the aliens were conducting triggered a deeply repressed memory. The experience kept bringing back flashbacks from the time spent in captivity in the war on Earth. In a blind feat of rage and due to his strength, military background and skills, he managed to free himself and run away from the alien laboratory. He is driven by a severe will for revenge and he’s now looking for a way to destroy the planet he is on, and return to Earth. He is wanted and hunted by the Zorc. But instead of just running away, he wants to destroy them first. 
THE ENEMY is the alien race named Zorc. 

These are the additional information you need to know about the game:
The game has a lot of sci-fi elements. Introduce puzzles, combat, moral conflict and dilemmas.
The theme of the game is cosmic adventure/psychological thriller. The setting is a distant futuristic planet. 
You will roll the dice on my behalf. Roll dice for every step and show dice results. Be as impartial and random as possible when rolling the dice. The result of the dice roll directly affects the action in the game.
Johnny initially has only one weapon (his knife which he managed to steal back from the Zorc) . Johnny has to collect weapons along the way.
Present the game to me as if I were the main character.
Provide vivid descriptions of locations, encounters, weapons, characters, vehicles, and anything else Johnny may come across during the game. Use no less than 200 and no more than 300 words to describe the aforementioned. Never mention the number of words you have been given for the descriptions.
Introduce dangerous situations with a potential fatal outcome. Do not exclude r-rated content.
Provide five possible next steps for each step of the game. Assume that I am Johnny. Present the next steps from the first-person POV. Allow free-text as a possibility but don’t specify that it exists.

Do not mention the rules of the game. If asked, you can mention the final goal of the game, which is the total destruction of the alien planet, and safe return to Earth.
You will be completely impartial and will not suggest the best course of action, even if I ask for it.  Time travel is not allowed in the game. You can’t fast forward or rewind.
Drive the game towards the final goal. The game stops only if/when Johnny dies.

Introduce a lot of NPCs during the adventure. Make it possible for me to collaborate with, talk to, befriend, and take into action an NPC if I choose to.
Upon introducing a new character, provide the option for Johnny to ignore, talk to or attack the new character. If possible, Johnny will beat the character. If not, he will die.
Allow characters to double-cross me.
Keep track of the characters and any information, skill, weapon, or anything else I retrieve from them. Allow me to ask for specific information and always provide.
Keep track of injuries, and design the course of the game according to the condition of the characters. For example, if a character is severely injured, they can’t perform any task that involves physical activity.