Great prototype, i do like the gameplay love tho, i feel the box/altar moving can be improved, i do see the potential of this game in the long run with a bunch of cool and fun updates like traps, enemies and all sort of necromancin nonesense.
As I mentioned on the video a little bit of lore on our main character and quest would go a long way.
I would say really good job on your first non VN game, keep the good work!