Had this a few weeks now and have only managed to have 2 or 3 games in a row, so this morning I thought I would finally fire it up and try to get my head around the game, figure out how the enemies work, etc., and see if I could get anywhere near my previous best of around 275,000.
Despite having played before, I only realised 2 things today which I really should have noticed earlier, and which are pretty important - namely that the 'smart bombs' also fire bullets at you (hence, what I thought were random deaths caused by poor collision detection, weren't!
) and also that when you've collected the alien from the escape pod and the screen is red (bonus points time), none of the enemies fire at you.
I figured out these mid-game around level 9 and went on to reach level 24.
Still a long way to go to reach a million, though.