Hi there, I am a YouTuber focusing on Indie Games and I also do other things! Been testing your game for a while now and I have also started recording some Gameplay Walkthrough:
Here is some of my feedback for now, contact me for a faster way for communications, I would like to help you and test the game further more:
♦ Game Idea: The idea is not eniterly new but from what I am able to play right now it looks like you have put the idea of 2D side-scrolling games into a good use! Would love to see more from you for sure!
♦ Gameplay: The game runs smoothly and had fun actually playing the game, having that double jump is nice! I also would like to know if it is possible to play this game using Keyboard, some inputs are not supported and I have explained one of them in this video (related to changing the weapons).
♦ Story: I know you have that written above, and I know this is still early in developement, but it does not hurt to let you know that the story side (in-game) is missing, the focus in on the gameplay which is really fun, you can add up some story elements to the game through certain notes with items that tells the story or parts of it.
♦ Artwork: The artwork of the game is a style that my little brother loves! It has that pixel art style which is very common and loved by most players nowadays! I also like the characters design! However, the items have only one color and shape to be picked up, even though that they are different when collecting!
♦ Audio: I love that thunder and lighting going on, having the sound effects early done in the game is always a plus! The game could use some background music, I see that you have it during the boss fights so far!
♦ Bugs & Constructive Criticism: I believe the video and what is written above is what I have for now! I would like to add also that the boss fight with the Ogre was pretty easy! Some other enemies were harder than him to be honest (I will have more footages soon as I have played more than it is shown on this Gameplay video).
♦ Things to Double Down on: What you have here is a very good game and I would love to support those who work hard or have a talent! This is what I am capable of doing as a show of support, hope this gelps! You should really make the demo shorter though, around an hour! The full game can have the best of what you have planned! I would love to see more of this content, keep it up sir!