While a great effort at a platformer, the game could have really used some more vigorous testing before uploading. The edges of each ledge seem to have weird hit detection which caused me to fall through though I definitely landed on the platform. Also, playing Montgomery's challenge was quite a pain because the drill-like objects cannot be ducked under very effectively due to the character's height - I ended up just walking through them and taking damage because my health was plentiful and the dodge was far too difficult.
There's also a bit of a snaffu with working the switches, sometimes they work perfectly, sometimes they have to be clicked multiple times to operate, which I found odd.
With more polish I honestly think you can churn out a very responsive game. The running and jumping felt very natural and tight in my opinion.