Hey, thanks for the feedback! I'm thrilled you enjoyed the game and I'm pumped to work on future updates!
I agree the echos need more impact, and there's definitely a bug or two causing issues. Time constraints got the better of me, but I'll fix those bugs and make the echos wave away as planned! Also plan on adding some abilities and increasing their size a bit more just to make it more impactful on the gameplay!
Thanks for pointing out the screen and collision problems. I plan on getting the scaling done and make it so that the player teleports back if they leave, just in case! And I've got some fun ideas for new stages and hazards in the pipeline >:D (maybe even more characters and animation?)
I appreciate your feedback and I'm diving right into fixing those bugs. Hope you'll enjoy my future work and updates!