I've got a set of changes I'm going to publish soon as the 0.2.0 update for vine game. This update incorporates a lot of your feedback, so I want to thank you all again for sharing your thoughts.
The biggest note was poor performance, so the first thing I worked on was optimization and quality settings. I'm seeing great improvements in framerate on my test laptop, and if the game is played at the new lower quality settings, framrate is well above 60 on my test laptop where I think it was in the 20s before.
I've also tightened up the character controller, making it less floaty and slippery. Another big change to the player was I replaced the double jump precise timing attack with a simpler attack that always fires at your feet whenever you double jump. I hope this will make it feel like you have more options to navigate through enemies and bosses.
Another common note was that the tutorial was pretty bad, I've reworked the tutorial to be vertical, simpler, and more representative of the main game.
Lastly, I've reduced the enemy count but made enemies bigger. This should help with some notes I got that there was too much going on, there are now fewer enemies overall that are easier to notice and keep track of. In addition, having fewer entities in the game should have performance benefits as well.
I want to thank you all again for all your great notes of feedback, your comments really help motivate me to keep progress flowing and hopefully get this game to a great end point. I'd like to do a few more test playthroughs to make sure I havent introduced any new bugs and a few last bugs to fix, but I'm confident I'll be able to put out the 0.2.0 update some time this weekend.