This is a tough question. Admittedly, teaming with friends or with a clan to take on the general is much easier than going solo. This is because of the presence of his bodyguards who will focus all of their damage and attacks on you rather than spreading the damage around and attacking everyone present. However, once you slay the general, all of his loot goes to you. Team efforts can make the battle bearable, especially if you have a solid strategy with some players being the tank and others hitting the boss with ranged DPS. However, the largest problem with being a team is spittling the loot, because there are some rare drops that can be very hard to part with. Still, the answer is up to your playstyle. If you are more of the lone wolf type and have effective strategies to counter all the damage, then you can solo him. If you play the game for a cooperative experience, then you can beat him as part of a team. Additionally, your views on loot and your need for the Bandos armor might impact what you do as well.