This ROM is based on this Prototype:
The ROM contains nearly every area in that prototype, though without collapsible floors. (One small room is also not in to make one path have one fewer step.) The ROM was released in September 2017. The full game with the scenes you mention came out in October of 2019, a full two years after this ROM. To get the axe to stick, you have to hold the button down for about a quarter of a second, not press and release it. There's not really a team, I did all the art, music, and programming (sans the music library and very small snippets) for this game alone, though I did have a few testers. It is unlikely to be updated, and it represents the game that was available when it was released. A demake of the full game would be a much different project.