Apologies for resurrecting an old thread, but I've found some rather interesting techniques, exploits, etc. I also intend to make a playthrough soon.
-If you keep a spawn point at the edge of the screen and keep shooting the things that come out of it, you can get a boatload of extra lives. This is especially easy on level 2A with the flame gun and one of those spinning pac-man spawners. I recorded a short video of this and will probably toss it on YouTube soon.
-The climbing mechanic is a total crapshoot. It seems that what you have to do is hold up and shoot in order to grab on to a platform or chain, but it only works when it wants to.
-More Super C rippage, in the form of the little blobs that the 4th boss drops that squiggle along the floor. They also seem to use the exact same code as in Super Contra 7, where they dropped out of the final boss's eyes. While on that subject:
-The game's engine is way, way too similar to Super Contra 7's engine. The enemy movement, the physics, the scrolling, it all feels exactly the same. Level 4A also seems to use many of the same graphics and (I think) the same layout as level 2 from SC7.
-The continue code Iniche mentioned is actually just as simple as spamming the start button after you get a game over.
-The first boss can be easily broken by laying down in the left corner and holding down the fire button. Nothing will be able to kill you, even when it looks like it should.
Well, there's all my assorted observations. Someone should go through the rom with a tile editor and see if there's any leftover Contra sprites or terrain in there.
Update:
Today I was determined to beat this game, but kept dying on level 3 and continuing. As a result, the palette eventually started getting worse every time the screen changed.
Spoiler: click to toggle
