I just got the game about two days ago and love it. The first three levels are fairly easy and the first half of level 4 isn't too hard to navigate, but it feels impossible once I hit the second half. Some asteroids fly at me if I shoot them, others shoot at me, some seem to take dozens of hits, others explode into huge chunks, and there are some that'll come zooming towards me shooting bullets and almost resistant to damage and then explode.
I've spent about an hour and a half trying to clear this part, and there were about two times I seemed to come close, but then I'd get shot in the behind with some debris by a rock I just blew up.
A video showing how to get through this part would be awesome, but a simple strategy or at least suggestion of what weapon is best to use should be enough to help me along.
I just hope some of you guys out there have played it. If not, I'd suggest it to anyone that enjoys the R-Type formula.