Percy would likely experience extreme loneliness and fear. In Tartarus, the very air is filled with malevolence. He may start to doubt himself without his friends around. However, this solitude could also force him to grow stronger. He might develop new powers or a deeper understanding of his existing ones. For example, his control over water could become more refined as he battles the strange and dark forces of Tartarus. His journey through Tartarus alone could also be a test of his mental strength as much as his physical abilities.
He might face numerous terrifying monsters. Tartarus is full of dangerous creatures in the fanfic world, and Percy would have to fight for his survival all by himself.
Well, one possible plot could be Percy facing his inner demons in Tartarus. Since he's alone, he might have to rely solely on his own skills and memories. Maybe he'll encounter some long - forgotten monsters that test his strength and willpower. He could also stumble upon some hidden secrets about the place that no one has ever known before.
It could be Nyx. She is a very powerful primordial goddess in Tartarus. Since Percy is alone, she might see him as an easy target or a threat to her domain. Nyx could send all sorts of dark creatures and illusions to stop Percy from achieving whatever goal he has in Tartarus.
He might face terrifying monsters. Tartarus is full of the most dangerous creatures in the Percy Jackson universe. So he'd have to fight for his life constantly.
He might face numerous terrifying monsters. Tartarus is full of dangerous creatures, and without his friends, Percy would have to rely solely on his own skills and the power of his demigod abilities to fight them off.
Bob the Titan could potentially be an ally. Since he has some knowledge of Tartarus and has shown kindness before, he might come to Percy's aid again. He could help Percy navigate the dangerous areas and avoid some of the more powerful threats in Tartarus.
If Percy were alone in Tartarus in fanfiction, the story might focus on his inner struggle and growth. He'd face extreme dangers and might discover hidden strengths within himself.
In this fanfic, they might face terrifying monsters. Tartarus is full of dangerous creatures, so they could be constantly fighting for their lives, like battling against ancient Titans or monstrous beasts that are native to that hellish place.
In fanfiction, when Percy meets Kronos in Tartarus, it could be a battle of wits. Percy has faced many challenges before and learned from them. Kronos, on the other hand, is cunning. Percy might try to outsmart Kronos by using the chaotic nature of Tartarus against him. He could lead Kronos into a trap where the very essence of Tartarus, like the rivers of fire or the howling winds, would weaken the Titan.
Well, one possibility could be Percy facing his inner demons. In Tartarus alone, he might have to deal with the memories of his past failures and the fear that comes with being in such a desolate place. He could encounter strange and terrifying creatures that test his combat skills and his will to survive.
One possible plot development could be Percy facing off against Tartarus' own unique and terrifying monsters all by himself. He might have to rely solely on his wits and the powers he has developed over his previous adventures. For example, he could use his water - controlling abilities in creative ways to navigate the strange and dangerous terrain of Tartarus.