I see that you've been busy working on x2 and x3 hardtypes, So I'm making a beta feedback post for x2 hardtype
Here's my notepad list while playing through v0.15
Intro Stage
-Could use more platforming
Gigantic Mechaniloid fight/strat
Spoiler
Wheel gator stage
-Tiranos could use a boost
-Disk Boys needs a dmg boost
-Final sets of hover platforms, not sure if intentional but they hover away before you just see them on screen
Wheel gator fight/strat
Spoiler
an overall suggestion. Any stages with the Suits, You could prob get a little creative with them