Ha! I finally finished Spriggan (Normal difficulty) on a single credit with the DVD recorder going! I've been playing the heck out of this lately. Made it to the final boss only to run out of lives more times that I'd like to admit. 
Here's a link to the play-through:
In the description area I have links that jump to the start of each level.
Now I want to see if I can break 12 million points. There are a few areas I know I could have done better on...
Very nice play through ROFL. I just got this and did a little experimenting with the color combinations. I see you stick with red/blue though which seems like the playing it safe way to go with the shield like spinning weapon. Do you think you can reach your 12 mil goal with a more aggressive weapon set up?
I love the red / blue because it's great offense and defense rolled into one. Yes, it acts as a great shield, but it is so much more powerful than the 3-way shot you get along with it. To make the most of red / blue, I think you need to get right up on the more powerful enemies in the game.
I spent many years as a yellow / green fan because you can sit back and pretty much hit everything on the screen, but then you have to dodge a ton of bullets. I often find myself getting lost when a teammate enters the screen. I'll be killed and then realize I had momentarily confused my guy with the teammate. And some of the backgrounds are so frantic, I find it hard to see what's going on all the time (those areas with the crazy-awesome water effects and to a lesser degree the lava level). With red / blue, I don't have to worry quite as much about something seemingly coming out of nowhere. Using it as an offensive weapon, rather than just as a bullet shield, can rack up the points, as long as you don't put yourself in a position where they can fire through it and hit you.
I think to hit that 12 million score, I need to use the flashing orbs less and be less sloppy on the bosses. The hardest boss for me has always been the one that shoots out the lightning bolts, and I really shouldn't have died as much as I did on the other bosses.