Yeah I pretty much only use FPS Creator, so I've had a lot of experience with it. Sadly though, I was working on a different game for the duration of the game jam that never to off the ground in a playable state, so in the last few hours of the jam I threw this together. The loading screen are notes you would've originally been able to pickup in game, but I didn't have time to implement them as something you would find. You can see this with the short expansion where there are no notes on the loading screen at all. Most of my efforts were in the cutscenes and voice acting. As for the assets, yes and no. A lot are premade, but at the time most of the ones I used would've set you back around in total an extra $80, but they are now free since FPS Creator has been discontinued. But I am glad you enjoyed!