I gave up trying to get the Demolition Trooper credit on Veteran. After about 20 tries within the past week, I was just getting sick of it. Those Commando Pirates in the 3rd room always get me, or I get sloppy and lose in the 1st room if I don't kill the Air Pirates in time and they crash into the ground. It's so frustrating! I'll probably tackle Hyper Mode and then play Normal AGAIN, ugh...