I unfortunately can't really  give this a rating, since I haven't been able to actually play it, but reading through the PDFs, there are a lot of really cool ideas here. I love the idea of using a Kaiju as the map the players travel across, and having different parts with various terrain and skill challenges, all as players search for weak points. It gives a real sense of gargantuan scale. I also love the idea of a true/false rumour system players can uncover, and investigate for themselves. The lore and monsters described also sound really cool.

However,  (and maybe it's just my lack of experience with any tabletop RPGs other than D&D) I don't fully understand how the rules of this game work, and how systems like stats, resting, and progression are carried out, Unless there's a base system on which this is built, I think it would be really beneficial to have sections added describing how the game flow works between the DM and players, and how to properly set up characters.

Anyways, all in all, great job on this!