decent game concept here. dark puzzle maze. got a few things i think would make this better.
1) the sound effect for the skeletons dying is absolutely unnecessary. "oh, f me...." you almost had me quit the game after the first skeleton got hit but i wanted to give you some feedback instead of just saying "that was uncalled for an you should do better". get rid of this sound effect if you want players to actually play your game long term.
2) title screen plays music but the game doesn't have background music. if you are only using 1 audio player for your game i would suggest to make it 2 so you can have background and sound effects. if you have time make a background and sound effects adjustment option for their individual sound or at least a master volume selector.
3) title screen shows controls for keyboard and controller but doesn't separate them so for a computer user, the fire button seems to be space and a and x. would suggest a way to separate that for clarity.
4) there are no visual indicators for the wizard or the skeletons taking damage. if someone is playing without sound (trust me, people do play games this way). then they have no clue that the skeleton got hit or that the wizard took damage outside of the hearts. the first time the skeleton bounced off me, i thought the staff worked like a shield and that might be how you traverse through the level on able to take damage if you got hit in the back.
5) the beacon didn't stand out enough for me to know what it actually was. i thought it was a pile of sticks for making a camp fire the first time i played. please try to find a way to let the player know what they are looking for ahead of time besides just words.
6) the growing / shrinking light is a nice concept. would consider some of the light stays when the wizard fires the magic flame. for example. you start with a set distance of light (lets say 1 space away) you pick up the flame and now you have 2 spaces of light. when you use the magic flame, consider bringing it down half way to 1.5 spaces. then the player has incentive to collect all the flames in the map and isn't penalized so harshly for having to use the flames. maybe you want the difficulty at that amount, which is your choice ultimately. i think giving the player some kind of reward overall is better personally and a little more light is a simple fix here.
7) the first time I started the game, i was looking around the screen to see what the UI was and get a feel for the environment when a random skeleton came and hit me. same thing happened on the second level as well. would suggest to start the player in a spot where they do not take damage right away. simply move the spawn point please.
I hope that this helps you make the game better. please let me know if you do an update and i will try it again.