Even though I did your questionnaire... xD

The art style is very cute and adorable, it seems like a very happy game and the music back this up. The sounds you have used add to the effect of the cuteness (Yes this can happen)
The concept of using tea as his health is a great idea and it adds to the theme of Victorian steam punk-ness. The fact that many other bats are there as well give the effect of NPCs and make it seem like there are great character developments which could take place (Like the HarryPotter batty ^.^) Overall, you've done really well in the short amount of time we've had xD

One thing I'd say to improve on is maybe add in sounds when he attacks and picks up stamps, just a small notification sound, cause it seems weird to just see him flap his wings and you don't know if it will hit the ghosties or not D: I also don't know if you're able to find the suitcase 0.o

But overall great effort!! ^.^