Just thought I'd mention it, but "threw" isn't the right word, it's "through" or for short, "thru". Sorry, it's just one of the new ways people on the internets tend to misspell things as of late.

I've got Metal Slug 1 and 2 on the Neo*Geo Pocket Color and 3 and the 4/5 compilation on the Xbox, but the only one I've ever really messed around with was 3. Love the zombie level!