It is great to see a fellow Construct 3 developer making such a good game! :D
I really enjoyed the look of this game, comes across very clean and easy to distinguish enemies and obstacles. And the sprite designs are cute! I really like the main character's design.
The game mechanic is pretty good! I like that it teleports you across the screen and can get the player out of a pinch when surrounded by enemies.
It would be great to make it so that the player can choose how many times they can do the comet strikes instead of making them wait for the bar to finish. Also, it would be cool to see a player reward for doing certain patterns. (Like maybe an enemy will be holding a "full refill" energy ball/ item that will automatically refill your energy if you defeat them on the last hit when hitting other enemies.)
Or even have a boss that has a number on their shirt, and will only take damage on certain comet strikes. (Like if he is wearing a number "3" shirt, you have to hit 2 enemies first and then hit him on the third strike to damage him.) Just some ideas I had while playing the game. :D
Another bit of feedback I would personally like in the game would be adding checkpoints, or giving an option to Restart/ Continue a section. But maybe it would be better for a bigger game with more sections, since these levels are a bit smaller.
It would be great to go back and update aspects of this game, there is quite a bit of potential with this mechanic! Actually, playing some of your other games (Fists of Magic, Delivery Quest and Agnolita), you come up with some really good mechanics in such a short amount of time!
I hope you do well in this game jam and that this game get played quite a bit! Good luck!