Level Gallery.
Here you'll find hints to the location of most of the hidden items in Black Tiger, I think I missed a couple during the screen-cap playthrough...
I should have 5 or 6 vitality bars by level 8.
Level 1.
Level 2.
Level 3.
Level 4.
Level 5.
Level 6.
Level 7.
Level 8.
End Credits.
One last screencap of the character designers and pixel artists, well done!
For a complete set of level maps have a look here; http://www.vgmaps.com/Atlas/Arcade/index.htm