hey bc, here's my thoughts on the game :)
so, first off, i really enjoyed it! rae is very endearing as a character and i also like a lot of the pixel art you've used so far.
as for bugs:
as you mentioned, sticky keys do turn on after hitting fire too many times
i've also had some issues when jumping off platforms (or not as was the case for me). so, when running towards the edge of a platform and then hitting jump, sometimes it doesn't register and rae falls. i'm not sure if there's some issue of input lag on my end or if those were just fluke occurrences but i did encounter this a few times. i've tried recreating it a few times and sometimes it occurs but other times not. sorry that can't be more useful :(
i think that's all of the ones i found!
for requested features:
if it would be possible (or appropriate) to put an indicator in the UI as to when you've acquired the keycard, i think that might be very helpful, especially in larger levels or levels where there are multiple doors opened by different keycards.
also, perhaps a small tutorial section before the player gets put into the game proper would be a nice introduction and a chance for a bit of exposition if you thought it would be useful (like a routine training protocol that slowly reveals something has gone quite wrong and against expectation)!
and finally, some suggestions:
when i first encountered the title screen, i really liked that it was there but i personally felt its placement was a little too early. perhaps it could show after some perilous escape from a dilapidated section of the factory or some additional exposition on how the robots seem to be going haywire?
i kept taking too many hits to be able test this but does anything happen to rae if he 'overcharges'? if not, i thought that it might really cool if rae temporarily becomes really powerful for a few seconds! perhaps this form could even be used to solve some puzzles/overcome obstacles.
hope at least some of that is useful but please let me know if you'd like me to elaborate or do any more testing! :)