This was really cool! I found it to be quite enjoyable, albeit a bit frustrating (very) at some points!
Let's start with the good. I thought the art was phenomenal, and I really enjoyed the CRT effect! The sound design was crisp and snappy, and the gameplay design (fundamentally) was very intriguing. There were a LOT of combinations, and I think they were highlighted well with the bosses requiring specific combinations to overcome.
Here were some of my gripes. The hitboxes on some major enemies were VERY inconsistent. It felt like 70% of the time, I could dash through them and get a bit of damage inbetween making my skill combinations, but then the other 30% I would seemingly die while a few pixels outside of their hitbox. This ties into my second point, that I found some of the difficulty unforgiving. Being able to respawn at the start of that section was wonderful, but some bosses felt like you really needed to learn the spawn locations of each smaller enemy to get the combination in time. For example, the lightning bosses were WAAAAAY too fast in my opinion. It took me a good 20 tries to get it, and I felt like I needed to use a very tuned route in order to succeed.
The camera POV could have been a bit larger, as some enemies with a dash (E.G the storm cloud and the earth enemies) could seemingly appear from nowhere and take you out, which was very frustrating at the end of a difficult boss encounter!
The only bug I seemed to run into was if you dash through 2 enemies at once, it would only take the element from the first one. I think if this was working properly, it would have added a very interesting depth to the gameplay and strategy, allowing players to kite the proper combinations of elements to complete them faster. I as well believe the dash cooldown could have been .25 seconds shorter (or something in that range) as I seemed to be just a little off a LOT, and that led to a large amount of deaths. That could be a skill issue on my part though forsure.
Overall, I really enjoyed the concept, but found it a bit frustrating due to some of the issues listed above. I spent around 40 minutes and 100+ deaths to reach the end because I really wanted to give full and meaningful feedback, but if I was just checking it out, it might have scared me away from completing the game.
You still did a great job on this! I think with a few of these issues addressed, it could really unlock some of this games hidden potential :) Keep it up!!