It's more of a tip than straight up step-by-step instructions as RuneScape gold it requires creativity and a degree of entrepreneurship by the player. As we all know, large groups of people are working through mines, and killing zones daily all year.
It's not the most efficient technique, but is what I have found to work for me. My statistics are: 99 Attack/97 Strength/95 Defense/98 HP/80 prayer/90 magical/80 ranged, therefore if you have similar figures, this method should be an easy task. (But I'm still a novice :P If your stats match mine, there are much better Barrow strategies.
Wait, maging in melee gear? isn't that just make a splash. Also, is there anything else I need to complete other than preist in peril (I need to finish that one shortly!) The effectiveness of Slayer dart isn't dependent on your bonus, it only affects the force you strike with it . It's therefore better to stick with melee armor for greater defensive bonuses.
Slayer Dart accuracy is affected by your mage bonus (go kill metal drags in the rune and compare it with Mystic it will show huge differences). Damage, however, is not. You'll hit the same in mystic the way you would in rune. As for the black Sally really only worth using if you are able to defend well or are using barrage/blitz as well to get around. Sally is slightly more stable than slayer and, i believe, it is hitting more at 70 mage then slayer dart does at buy RS gold 70 mage. If you're not 85+ def or 82+ magic, you may as well use slayer dart.