Hey Gingerayyle, thanks for the feedback and glad to hear you enjoyed it.
I think you'll be satisfied with the final build of the game. We've now set it so the stamina replenishes a certain amount after a set period of time. Going forward with map layout and direction of later exhibits, we've made things more accessible and easier to gauge where to go, as well as gone back to the aquarium to make it a bit easier to navigate and find the pumps. (A dedicated map will also help alleviate this)
As for the Bertha fight, we've added a few bits of info to help figure it out what to do with her. So hopefully it'll be a little easier to understand what to do.
Thanks again for playing and letting us know what you think, it is very helpful!