(I am now in a rush to test as many games as possible to help, so please do not mind the cursory reviewing style.)
controls are QWERTY-only instead of layout-independent, BUT arrow keys are enabled
playability feels nice; except for non-decreasing inertia when jumping: is it on purpose?
visually pleasant
even in-game descriptions!
wall jump allows you to completely climb walls
not sure what the green ‘fire (toxic waste?)’ balls are for; according to the given keys, not usable?
got to the end, apparently
I think this might be unfinished
connection to theme is a bit loose
Conclusion: nice base for a platform game, but not sure about its originality, nor its mechanics