Master Giby said:
I think BBH can go through it with 1 credit, or was it one life...I forgot.
Both, depending on which version it is
1 credit if it's the "shared" lifebar version, and 1 "life" (of sorts) on the multiple lifebar version. (I always use Team Mode and don't lose a team member, so I guess that counts)
The game most definitely is NOT impossible. Nothing is cheap and unfair in this game when you have a roll button to avoid attacks, everything is easily dodgeable. You just have to pay attention to how enemies attack. Bosses share a lot of similar attack patterns, just pay attention and recognize how to dodge them. And even in the event that you do take hits, there are plenty of life-ups along the way, especially once you master close-range kills. Even if you're not going for a one-credit clear, four credits is plenty once you get a feel for the game engine and start recognizing how enemies attack.
You also might want to check out
my ancient Shock Troopers page for other hints and information.
As always, if anyone ever has any questions about this brilliant game, feel free to ask