After a few more story events, you'll finally be able to enter Tartarus. This first expedition is mandatory and serves as a tutorial for combat. You'll be accompanied by Yukari and Junpei. Focus on understanding the 'One More' system (exploiting weaknesses for extra turns) and 'All-Out Attacks'. Your goal is to reach the first barrier on Floor 5. Don't worry about grinding extensively; just get comfortable with the battle mechanics. Remember to use your initial Personas, Orpheus and your starter Persona, to their fullest. Heal frequently and use items when necessary. This initial climb is designed to be manageable.
