Oh man, I really couldn't resist playing this because it says hack n slash. I would like to drop what I think from my quick play session.
While I understand that it's still on prototype stage, I have 2 major complaints that deter me to continue playing for too long. One would be the dialogue and the other would be the occasional teleporting/blinking of the boss. The blinking problem makes it a lot harder to stay alive due to getting hit "unfairly" due to it, which is fine to tackle on for hardcore players, if not for the dialogue. What makes the dialogue problematic is that you can't progress through it manually, let alone skip (I tried clicking and pressing space with no result, so if there is actually a way, ignore this hehe). Which makes it tedious to do more trial-error to enjoy the rest of the currently playable part.
Now that that's out of the way :)
Good job on this prototype, I think a lot of parts are on a good track. Soundtrack and visuals are awesome, they fit the narrative well. The droning string sound at the start of menu theme sets the mood right away. The art and dialogue are great as far as prototype goes, as other comments said, the spin towards "big" as theme is nice. I'm curious on how the narrative will evolve beyond the prototype. Imo the good gameplay aspect is that how the first boss' attack pattern is telegraphed by a visual cue, that is a good game design being applied. The second attack pattern however, could use more work since that was the part where I feel rather "slow and stall-y" and where I lost interest on the prototype due to the aforementioned problem. But overall, I want to see this as a full-fledged game one day if possible