Apologies for the outburst, while your did manage to make me pull some hairs, my "critic" (venting moreso) was still not as constructive as I'd like it to be, so here's something better.
regarding bugfix, without devtools I can't do much, however there are very notable bugs that comes from either carelessness or poor planning, such as the snowball fight. I don't have access to variables, so my knowledge is limited, but the snowball being invisible is entirely the fault of a missing png.
I've taken a look at some of the code, and knowing Hitama's rendering technic for sprite, I'll assume the same issue of your variable not being tied to frame refreshing, which you should do as it'll update the sprites in real and also will not be dependant on triggers to remove unwanted sprites (e.i. Lumi's lack of update in puzzle one, and the first snowball round). It's normally ill advised to render that way for performance issues, but it's faster and shouldn't be to much of an issue on an rpg maker game with static pngs.
For the content itself, I have been too harsh I think. The game does have a fun premise, and that's where my anger mostly came from because of how good it could have been otherwise. The riddle is really just bad, I have no other ways of putting it. It makes too little sense, and pushing statues is just not fun.
The first puzzle was fun, even past the sprite bug, but I still think that these puzzles should overall reward observation and deduction skill better than just running around and brute-forcing solutions. I can't offer advices here, I'm not a genius designer myself, but additional hints or re-worked visual cues should be the way to go in my opinion.
Overall, it's still a rather impressive tech demo and a little reminder that one can do a lot with rpgmaker still, but is severly dragged down by some questionable design choices and mostly entirely broken mecanics.
I once more realise how unfair I was previously, and apologies for it. You still poured time and effort in making something fun for others (which is much more than my complaining), and I shouldn't have been entitled like I was. Keep up the work, and I look forward to future projects from you. Might make a donation at a later date when my finances improve. Good luck and keep your head up.