Hey there NinthNei, I got your game for judging so here are some of my thoughts. You definitely nailed the retro aesthetic with the art, music, and story. I understand that this was just a single chapter of a larger story, but I wish there was more happening with the Sunflame and that mysterious evil figure.
The battle system where you power up depending on what attacks you use is a great idea and rewards fighting mobs instead of skipping weaker enemies in search of ones that give more experience. However, I think having some physical skills from the start could be enjoyable over just having magic skills. I'm sure it was due to the time limit of the contest, but since there are different weapon types it would've been cool to learn physical skills the more certain weapons were used. I kept Alex as a physical attacker with an axe, which meant he didn't have anything special he could do in battles. If he had gained a double attack or some like an 'Axe Smash' skill it would've made it worth it to leave him without magic.
The mapping worked well, but the first dungeon felt pretty large. Especially since I was unlucky and kept fighting the 3 bat enemies which almost wiped my team out repeatedly while I tried to find my way back outside to safety. The battle troops would have used some variety when it came to number of foes, it seemed like all the troops had three enemies. The different types of enemies was nice to see, but for certain foes like the bat I would've like to face just one or two at a time while I was still getting stronger and figuring out my team's fighting styles.
Overall, good job on the game! With some more work I can see this being an amazing RPG.