The gameplay is really fun, interesting, and surprisingly strategetic! You can't really go guns blazing aside from Biboo (And there's a lot of Biboo specific items, which I will get to later). Choosing items for battle also was fun, with them being splattered around in the inventory and you choose ones within the time limit. I think the art style works really well for the theme, and I like the dialogue boxes and the easter eggs in the items. I was not expecting to see a "I gotta eat sushi or I'll die!" reference LOL! The gameplay is really fun, as I mentioned earlier and I wanna continue playing!
Some critiques are that there are a lot of Biboo-specific items but that's about it. If there are more items for Ollie and Zeta I would've think it will work nicely. Also, I would've liked some background tracks instead of the static. Would make the game more immersive ;)
Overall, great entry! Well done!