Itch.io has a feature to create Devlogs on the game edit page. You should probably use the tools the site has next time. 

I like your hand-drawn character , the sword and the crossbow. They all fit pretty well together. Also the animation of the character  is well done. Took me a while to understand how to play the game, but after that, it went pretty smooth. The arena is too empty for my taste, some decorations in  your hand-drawn style would  create a nice atmoshphere. I was waiting and preparing myself for a final boss showing up - but this is maybe something you are already planning? And sounds of cause, as others were already mentioning. There is a nice coincidence: Until 2 weeks ago I was creating the art for game that would have played similar to yours. Also in a hand-drawn style.  Our team fell apart somewhere in the middle of the Jam :-( But I kept some screens - let me share one, just for fun ;-) Wait... where is it... ahh - here!

• Overall: Awesome start to a survivals prototype.  Maybe the weapons could have elements too and the enemies could have elemental weaknesses.
• Fun: Controls felt smooth and some cool weapons!
• Visuals (Graphics):  Very cool story book 2.5D art style! Maybe the terrain could have hills and not just be flat to take advantage of the 3D ground.
• User Interface: The weapon upgrade text boxes could use some images of the weapons and larger text.
• Audio: I'm a big sound advocate, so the lack of sound makes it quite dull. Even simple temporary sounds make a huge difference~

Great start and keep it up! Please check out my game when you can :D

Great work! I like playing survivor-likes so this was a nice little treat. Down below is my feedback!

General:

• I see that your game is called Elemental Survivor. I think you should play a bit more into that because at the moment I only see earth elements. Adding some fire, wind, and water would be nice to have!
• Going off this, I think having the weapons also have elemental types would be nice as well! Would play more with the title of the game

Art:

• I think the main character should be the same size as the monsters or at least smaller than. I think it reads a bit better, and also makes your own hitbox smaller which is nice as well.
• I like the drawn art style! Maybe adding some more colors in the palette would be nice. With more elements I think it will make the game pop more!