Since this is your first game, and you want me to be honest, I'll try not to hold back-
Okay, so I just entered the Swarm's nest at 00:42:03, and I stopped playing.. I could not really see the game to the end because I'm already annoyed enough by the VAST amount of random encounters :( I already fleed from most battles from the castle until now.. and I find the game quite challenging, and I spent almost an entire hour and I haven't even finished the game :(
But hey, this is your first game, there's a first for everything. :) I love RPGs, and you made this game in RPGMaker, and okay your coding, story, and everything was not that bad! I did not really encounter any bugs whatsoever. The art and audio is appealing enough! (idk if they were rpgmaker assets though? but either way appeal is important so people know how fleshed out your game is :) )
The only quarrel I have is with the level design. From beginning until where I ended (the Swarm's nest), I found the level design stressful and quite difficult to navigate. Even in the town outside the castle there were random encounters? I found most of the navigation really hectic because of the amount of random encounters.. I don't know if I'm just unlucky or that the encounter rate is just really high.. I just kept going because I assumed it would be short but apparently not. So i gave up during Swarm's nest. I'm not sure if the game is just really long or the navigation from area to area is just like a really complex labyrinth.
So in line with this, I just recommend you make the level design clear to the player, or easy to navigate! Perhaps even decrease the level of difficulty of not just the bosses, but the encounter rate!I hope I don't come across as too critical.. but I really like the RPG element of your game! It's just that I find the level design really hectic.. Congratulations on your first game though :)
extra notes:
Okay so I haven't used RPGMaker that much but, is the file size really supposed to be that big? I have slow connection from where I am and so I really waited to play this game ><
Audio feels too loud!!! i reduced my volume significantly, and I hope you add an option to control it!
There was a save file already when I opened the game? I did not tamper with it and just made my own save file
the death boss is too OP! I consumed 7 potions in a row after being death sweeped to 200-300 everytime I am back to full health!
if only i knew LShift makes you walk faster, I would've used it since the start .-.
also I just realized, I've reached so far and always collected coins but, where do I use them?