if you wanna pass the triple elavator mission in dark siders2,you have to read this page.at first go up staires and find the first elavator's enter way .go inside that and pull down the elavator.next find the dragable object in your sides.push it into the first elavator and pull up the elavator.next use your holding right click to shoot that dragable object to the next elavator.ok,it'll goes there without any problem.but you can't push it to the third elavator,cause that's higher than you . you must use double jump and your wings to grab the third elavator.go up and pull the third elavator down,then drop your self to ground and go to the dragable object's position.shoot that to third elavator and push that to the side of higher ground.then,jump and grab the next ledge.GOOD LUCK
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