A1: There are just obsticles at the start,just keep goin straight up the ladder,walk accross pipe,jump up grab pipe pull legs up,cross thru,on other side walk off right side grab ledge shimmy across.climb back up then duck under low wall. walk to small platform on right jump up grab zipline,then it causes explotion,sam falls grab platform,pull up then duck under pipe.climb up vertical pipe and step off onto big red pipe to your right.look down into big hole jump in it follow it thru,climb ladder follow guy with briefcase down below the platform of the rig.