Naruto would face the psychological challenge of fighting alone. He is used to having his friends by his side. Without their support, he might have moments of self - doubt. The army might also use psychological warfare against him. They could taunt him or try to make him angry to disrupt his focus. In terms of actual combat, the coordination within the army could be a big obstacle. If they are well - organized and work together effectively, they could set up complex traps and ambushes for Naruto. And if the army has access to some sort of large - scale destruction jutsu, Naruto would have to find a way to either avoid it or counter it.
Well, Naruto has a lot of powerful jutsus at his disposal. His Rasengan alone can cause a great deal of damage. He could also use his shadow clones to create distractions and attack from multiple angles. And let's not forget his Nine - Tails chakra. With that, he could boost his strength and speed to take on a large number of enemies at once.
One challenge is trust. Not everyone will immediately believe in Naruto's intentions. Some may think he is trying to gain power for himself. Another challenge could be resources. Feeding, housing, and training an army requires a lot of resources. He needs to find ways to get enough funds and supplies.
One challenge is controlling the amount of natural energy. It's not easy to find the perfect balance. Too much and he could turn into a statue or something similar. Another is that he doesn't have a proper teacher to correct him immediately. He has to rely on his own instincts and the limited knowledge he has about senjutsu.
His friends from the Hidden Leaf Village might help. For example, Sasuke could be a powerful ally. He has his Sharingan and his own set of powerful jutsu.
One challenge could be overexertion. He might push his body too far and risk injury. In fanfiction, Naruto's intense training might also attract unwanted attention from enemies who see his growth as a threat. Another challenge could be self - doubt. Despite his determination, there might be moments when he questions if his efforts are enough to reach his goals.
If Naruto were to fight an army in fanfiction, he would bring his unique skills to the battle. Naruto is known for his never - give - up attitude. So, even if the army seems large and intimidating, he would keep fighting. He could use his Uzumaki bloodline abilities, like his strong life force and large chakra reserves. Also, his ability to make friends and allies might come into play. Maybe he would convince some members of the army to switch sides. His transformation into different forms, such as the Six Paths Sage Mode, would give him an edge in combat. With his speed, he could quickly move around the battlefield and take out key targets in the army.
One challenge could be facing powerful new enemies. In fanfiction, authors often create unique and formidable foes for Naruto. These enemies might have strange powers or abilities that Naruto has never encountered before, forcing him to quickly adapt his fighting style. Another challenge could be the moral dilemmas. He might have to make tough decisions in the chaos of war, like whether to sacrifice a few to save many.
In an army mom story, a big challenge is separation. The mom has to get used to not having her child around. It's not just the physical absence but also missing out on important events in their child's life. For instance, birthdays, graduations while they are deployed. Another challenge is dealing with the after - effects of military service on their child. If the child comes back with PTSD or other issues, the mom has to learn how to help and support them through it, which requires a lot of knowledge and patience.
In a Naruto fanfiction where he fights an army alone, he could win through his vast array of jutsu. His Shadow Clone Jutsu could be used to create multiple decoys, confusing the enemy. Also, his Rasengan, a powerful and concentrated chakra attack, could take out many foes at once. His Nine - Tails chakra might also give him a huge boost in power and endurance, allowing him to keep fighting against overwhelming odds.
In fanfiction, if Naruto goes to Kiri, he would face challenges related to the village's internal politics. There could be different groups within Kiri with their own agendas, and Naruto's presence might disrupt the balance. He might also struggle with the language barrier or cultural differences. For example, some of Kiri's traditions might be completely foreign to him, and he could accidentally offend someone. And of course, there are always the powerful and dangerous missing - nin from Kiri that he could run into.