Yeah, the mod has undergone some very dramatic changes over the years, and the Blazter was in dire need of streamlining and nerfing. Seeing as back then Blaz had some absurdly overpowered ranged attacks, which is a little daft when the character is meant to be melee focused.
I've re-enabled the download for v1.3 for awhile, grab it while you can. Though I do plan on releasing a pack of all the older versions of GMOTA in the future once the mod is finished.