As mentioned by some of the other reviewers so far, I think this game has some really good potential, it's just not all the way there yet, and that's fine!
I like the premise of an exploratory horror game set in the office, but I second that the horror elements weren't really there aside from the Laplus jump scares (which I will admit did get me the first time, but subsequent scares just had me chuckling) and general dark atmosphere. I think we could still stick with this general idea, but twist it a little bit to be more of a threat and evoke those horror elements - Maybe Laplus wanders the halls and you have to navigate around her, shooting your gun can attract her or stun her, but she can't be stopped until the climax, otherwise you're stuck trying to gather the roses and avoid Laplus at the same time.
I also think maybe the roses should spawn in after you get the gun - there's nothing stopping you from running around and gathering all of the roses before getting it, but I only found the couple of enemies after picking it up, so I'm not sure if you can aggro them before you can actually fight them, but since there were only a few, there's no real purpose to them outside of just putting the gun to basic use.
Maybe you can tack on functionality where you need to hit certain triggers by shooting them, or use the gun to destroy environmental objects to get to certain roses.
And while the theme is present in terms of the story, I couldn't tell if there was actually any in game time to have to manage, which I think would help a lot , especially if you're balancing it alongside other threats.
Otherwise most everything else I have to say has already been covered.
Unfortunately I also was unable to get into the conference room with the last rose, so I wasn't able to finish either, but it does sounds like work will continue once the jam is over, so I'm looking forward to seeing how the project grows. Good work so far!