If in active turn I passed armor save from shooting and BTS save from haking both come from different direction , what happens if I want to fail my guts rool? Can trooper fail guts rool while climbing(without climbing plus skill)? If yes, can he end his guts movemnet on the normal surface if it has enough movement distance?
As far as I can tell, the rules are written in such a way as you need to try and improve your situation against at least one enemy, and that improving it against one of them satisfies the mandatory movement. As such, if you can't improve your cover against the shooter, you must try and leave the hacking Danger Zone - conversely if you can't leave the Danger Zone you must improve your cover against the shooter - and if you can do neither you must go prone. However, the rules are not clear on what happens if a Danger Zone and a direct attack Guts Roll happen at the same time. Without Climbing Plus you are not allowed to move on a vertical surface and since you can't go prone, either, you are left hanging.