If you are doing the bosses you will require a whole lot better armor. If you go in with only complete rune, it won't take you long to
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get slaughtered. You will require barrows/god armor (The type you get from the dungeon, like Bandos) a LOT of food, in LEAST 80+ ALL combat stats and 70+ Prayer will make your life a great deal easier.
In short: Get more moneyup and down your battle stats . I would recommend you get every combat level up one level , then try and receive Prayer to 60, bare minimal. Try doing it through slayer for some decent cash, which you really need. Rune is fine. Barrows is much better but rune is great if you don't have the money to spend. You may even array him. If you go for a team of 4/5 you could last maybe 10 kills rune. Probably 15 with Barrows, it does not actually make that much of difference.
Rune is cheap and easy to replace, as there's a continuous supply of this. You don't need Barrows. He will not require a lot of meals . A full devise of Tuna potatoes would be useful. I went with like 75 all combat stats. It took me a while to find a team, and ironically I was the 2nd greatest level in that group, and we managed to get around 10 kills . Completely off topic to the question, but quit banging on about Slayer. He's 42 Slayer. What is he going to kill to create'decent cash' there? But if you're so adamant that Rune is a heap of
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shizzle then what is he going to handle that? Your incompetence is driving me insane.