It's a challenge to make a good game, and it's extra-challenging to make a good game with strict time limitations and using tools you aren't familiar with. While I found this game enjoyable enough to finish, I felt like there were some points that would have made it stand out from the crowd more.
I liked the concept of encountering an enemy, then be given a choice of attacks to defeat it. Unfortunately, it wasn't very polished, so it was ultimately kinda disappointing.
There needed to be more on-screen animations! They make actions feel more meaningful. I understand that these shortcomings are probably due to your change in battle systems, but it's how my feelings were in the moment.
My biggest gripe about this game is the backtracking. I committed similar errors when I was creating my first game, so I know how easy it is to fall into this trap. It's annoying to go in one direction, then have to go back the way you came to get to the next thing! The maps were not too big, so it wasn't unbearable, but if there was one thing that I would change about this game, it's that.
Another thing that annoyed me was one of my pet peeves: false choices. Would you like to pick up the item that will advance the plot? <Yes/No> Um, why wouldn't I say yes? Only present the player with this kind of choice if it's going to be meaningful in some way (like with the final portal, giving the player a chance to collect anything they missed); otherwise, just make it an automatic action.
I appreciate that you didn't make this into a visual novel, but there were some spelling and grammatical errors that could have been improved by some proofreading. I also appreciated the inclusion of a "skip the intro story" option, so when a certain someone (whose name starts with "KV") forgets to try using the escape key to access the menu and save, they aren't forced to watch the whole intro sequence again.
This game was a good first effort, and probably would have been even better if it had just had the benefit of more time. Keep practicing, get familiar with the engine and your plugins-of-choice, and I'm sure you'll make something awe-inspiring!