Originally Posted by Marcuz
I just found that the trainers in the whdload slave do not make invulnerable to missiles, only to enemy ships.
On level 1 in position the ship to the far right of the screen and the missiles wont be able to hit you, just make sure to get out of the way when you can't hear more missiles or the enemy missile ship will fly into you (not in SE).
On level 2 at the end of level baddie, position the ship in the top right corner and let the missiles & side weapons do the job (not in SE).
This trick actually makes it easier than SE.
On level 3 at the end of level baddies, position the ship as close to the lava in bottom left corner and let the missiles & side weapons do the job (works for SE too).