Oh boi!
I really love pokemon and, why to deny it, I am also a bit nostalgic ^^ So I really liked your game, as you can imagine---for me, best take on the limitation so far. Given the time limit, there are a lot of mechanics implemented, which is neat. The game is fun to play and keeps you hooked until you complete it (or even further). Great choosing of the music, btw, it fits very well. As a suggestion, only minor tweaks come to mind, as maybe adding some more feedback when you caught a po...a creature, items remaining or about the attack effects.
So, overall, great job.
PD: I couldn't beat the game until I caught a (weakened) scorpion, it was a true force of nature, doing every encounter by itself---now I understand why you love them! ;)