Well, it's a Flappy Bird clone. Nothing new here, folks. It plays pretty solidly, though.
The graphics are alright, and they look mostly polished, but it's really hard to tell when the obstacles end and the background begins due to a lack of contrast between the two. There are also a few noticeable points where the background "ends" and repeats itself. The font that you used for the text and numbers looks unfinished for some reason (but it might be a stylistic choice).
Sound wise, it's also pretty solid but the music and sound effects that you used don't fit the setting of the game at all. It almost feels like it was decided on at the last minute instead of being a part of the game itself. I also noticed a bug while writing this where the music eventually stops looping until you click the reset button after you die.
The plot feels like an afterthought—it pretty much doesn't exist until you lose, in which the game tells you that "Your'e [sic] Fired!" I'm not sure if the plot was written after development was mostly finished, but if it was, I'd suggest knocking it out first. You'll generally have a much better time keeping the game coherent instead of having three different elements that all contrast with each other.
For a first game, this is pretty respectable. I'd consider honing your writing skills and delivering a game that isn't straight up a clone of something else. Art and sound seem to be your strong suits, and I think your skills in those areas would get even better if you continue to work on them.
Keep at it! I'm sure you'll be making something awesome in no time.