Personally, I’m a huge fan of 2D elements within 3D space. So it’s really nice to see the shooter work. It reminds me of Wolfenstein 3D and Doom (the really old ones, showing my age here Q_Q).
I can see the ideas you have in mind with the shooter and the monster sneaking up. Would love to see it more fleshed out after the jam as 7 days are clearly not enough to finish this. Keep it up!