Hi, thanks for the video and for the feedback! I posted this in the other thread to comment on the lack of diagonals or aiming for the gun:
Please remember this is a demo before we've truly started development of the game, so certain features won't make it in due to technical complexity, or won't be as polished as they will be in the final product. The lack of up or diagonal shots is one of these, shooting horizontally is relatively easy to implement, but especially diagonals are actually really difficult to implement.
As for jump scares, I personally hate those too! So while I can't speak for the rest of the team, I'll be arguing against using them anywhere in the game.