i did this with all henchies and i'm also a ranger/mesmer. these are the henchmen i took: brawler, fighter, healer, archer, mage. if you want you can replace the mage with lina the protector. but i really didn't beause i frankly didn't see her :x the skills i used were basically conjure phantasm, dodge, power shot, storm chaser, troll urgent, empathy, phantom pain, and resurrect signet.
the beginning is quite easy.
every splinter? thing you see just disarm it. you disarm it by clicking on it and drop the splinter down somewhere and run. mostly the henchies will follow you when you do this so just rest till the party is okay.
don't bother killing off the two minotaurs that are in front of you. just go to the right and wait a little till the minotaur from the top comes down and then you kill it, don't go to it else you'll aggro off those snake/dragon in the ground things. if you plan to do bonus(i didn't do the bonus because i just wanted to ascend...cause you can take your time with bonus after the mission is completed):after killing the minotaur, go kill those snake/dragons in the ground. there should be a splinter thing in your way, just disarm that before fighting them. after killing those two just go up to this circle thing with the crystal and the bone guy should res up. that's 1/3 of bonus complete.
after resing the guy on back down, a group of 3-4 minotuars should be in the center. from the rightside just pull off one minotaur at a time. more minotaurs will come and go. you should kill at least 6 or so. then still on the right go up to the bridge. kill the snake/dragon thing in your way. cross the bridge, disarm the splinter. kill the snkae/dragon thing. if the minotaur below sees you just kill it off. usually there would be two, depending on how many you kill off in the first minotaur group. there's also a snake/dragon thing in the middle of the hill top. you can kill it off forfun or exp.
after that talk to the ghost. a clock will appear. 30 minutes.
go to the left exit. there should be a group of anarachist? 3 of them, kill them off. then keep heading in that direction. there is a group with a boss to your very left, you don't need to kill them just pass them up. kill and disarm any splinters in your way. this shouldn't be hard. grab the crystal. this should take about 9 minutes or so. i just dodged and sotrm chased my way back to the ghost on the hill.
after giving the ghost the second crystal, i went back to the left exit. went straight and there's this "secret passage" were i go. basically its where the bonus bone ritual circle thing is. you could go the bridge way or the way around. i chose the bridge. disarm the splinter at the bridge. rest up. cross to the middle. now i had to wait at this part because right at the end of the bridge there was a group with a splinter and behind them was a walking group. i just kill off the group at the end of the bridge when the walking group behind it pst by. try to hurry up and kill the group, disarm the splinter. sometimes the walking group gets aggroed. just kill them off. then keep a little to the left. there should be a group to your right and left. just walk int he middle and you won't aggro either. kill the 2 groups near the crystal. grab the crystal and go back the way you came. dodge and storm chase over there. while doing that you will activate the bonus. 2/3 is done.
i relaly don't know the 3rd circle area. i forgot to mention that the third circle or actually the second one is at the second crystal. all of it is near by. if you want you can go back to it. after you grab the last crystal a gate will unlock a monsters will come out. just dodge and storm chase them. don't be funny and try to save your henchmen..just let them die. lol. well you just run back tot he ghost hero and then mission complete.

all done in like 20 minutes...
if you need more help on this go here: http://www.guildwarsguru.com/forum/s...ghlight=ascend
or just pm pink puppies/mister peachy and i'll gladly help out.