I want to extract some sprites for the kingdom rush wiki but I can't find out where the files are stored.

I ♥♥♥♥♥♥♥ hate this stupid thing. I've beaten every stage on the veteran/impossible difficulties multiple times for every Kingdom Rush title. I'm a long-time fan. This isn't a case of getting good. It's just me venting about how I find the design mechanics of the Blacksurge to absolutely f-u-c-k-i-n-g terrible. Devs. Never do this again. Patch it if you can. I don't care if it's beatable as-is. It's such a stupid design because there's no way to stop them from going into their shell and FULLY regenerating...

为什么我全三星通过了还是没有满星，才60多，满星显示100多

I beat this game long ago, complete, without spending anything in shop. Now I'm returning for some fun, but after the first map, I noticed I've earned some diamonds for the sop. And then, noticed I have tons of diamonds to spend. (I don't remember that mechanic, maybe never paid attention). I have read in wiki that each monster you kill have a chance to drop gems, so surely they come from there. Now, I noticed 2 endless dungeons which I want to start, don't remember them the first time (maybe updates)....

I have 61 of 110, with at least 1 star on each mission, but I can't seem to unlock the next group. Do I need to have 3 stars on all levels to proceed to the next stage?