I managed to get the Trophy weapon on normal difficulty - but only just, I picked up the last weapon needed to get the trophy on the last boss screen!
Plus, as a surprise bonus I completed level 5 without dying too, so now I have completed every level without dying.
I only have 2 achievements left to get - complete the game without dying and complete the game with fire weapons only.
Originally Posted by mailman
Maybe some hints at least?
You should arrive on level 3 with atleast 5 lives, so try taking a big leap of faith...