want to get the "do a barrel roll" achievement ???? then upgrade ur missile gun to max and get triple jump or double then goto snail king's place and stand on the first step & make sure u stick with wall and have patience
kill the snail's 1st life thenu can target to that shield stick at the corner and also absorb the bullet that comes from above
u need a lot of patience and when u break the 1'st one then goto corresponding step and do the same throw ur missile at the bullet to stop it
now doit with 99% of ur patience or u may get the damage.
also do not let any fire ball in that room for ur chances of getting that achivement
getting to space v.early-
buy uzi ,first louncher upgrade and a stone jet pack
now lounch at the top most angle and use jetpack when u r at 400 feet then shoot ur turtle upto ur ammo then u'll be at space and enjoy:]
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