Hey, I saw your post in community! I tried the browser version.
You mentionned an inventory system, dialogue decision, multiple endings, etc.
They're super cool things to learn and implement, however I would try to get solid basics first - control and movement. Max speed is good but movement acceleration is super slow (think you mentionned you're aware), I'd crank it up wayyy higher.
The controls are a little odd. Most people are used to wasd for movement instead of arrows. I think it's okay to use arrows, but in that case, I would avoid mapping anything else to wasd (in this case the credits screen on A, I would avoid).
These are small changes, but I think they would really improve the feel of the game! Otherwise, congrats on submitting your game for the jam! I'm sure you worked hard on it, keep it up.