There are a few differences which might make a conversion look kind of strange. Your blinking injuries, for example, and the ice effect. Read this article and apply all the changes in reverse. Just download a demo of JJ2 and patch it to 1.23, that should give you an idea of the proper engine.

Battery Man is the hero of Battery Check, a game known mainly because it uses the JJ2 engine and thus people like to play around with it. You can download the demo here, and the demo is really all most people have, as it's no longer sold anywhere.