Thanks for the in-depth review. I made this game six years ago when I was 13, and a lot of technical touch-ups (back buttons, menu glitches, progress-based continues) were either oversights or unable to be accomplished with my programming knowledge at the time. These would all be fixed had I made the game now.
#2 is the first thing I would fix if I were to remake this -- around level six or so is when the game is at its hardest, and the later levels focused more on the explosion power-up than on enemies, which made the game much easier.
Just as a side note, Newgrounds only recently added advertisements before games. When this was originally uploaded six years ago, nothing was intended to play before it.
The Pokémon in Quick Draw were generally arranged by speed, but Pinsir was chosen as the second last opponent because of it being a counterpart to Scyther. It was a stylistic choice. Also, Mega Pinsir did not exist yet.
Wooper in this game dies in one hit, so type effectiveness doesn't really come into play when you only have 1HP -- except admittedly in the case of his Electric immunity. Voltorb, however, doesn't use any Electric attacks in this game and instead mows Wooper down with, I don't know, either Tackle or Rollout. Either would at least affect Wooper, and would sufficiently do 1HP of damage.
If we're getting this technical, here's a freebie: I'm surprised you didn't comment on how, although Gen IV and gender differences had been released at the time, Woopette still has all four protrusions on her antennae. This was an oversight by 13-year-old me not being as big a Poké Freak as 19-year-old me.
I really do appreciate the critique coming from a Pokémon fan's perspective. I hate to plug my own content, but I'm working on a new Pokémon fan game, Pokémon Campaign, which aims to be much bigger in scope than this old flash. I'd love if you checked out its demo that's available and find any oversights in Pokémon canon, because I'd hate to find things that bug me like this after release.
Thanks again for putting so much time into your review,