hey thanks for trying it out! i really appreciate it im really happy to see you liked it overall!!! If you scroll down a bit on the page the control layout is right there and when you pick up boxes there should be a pop up in the top left corner to hit F to drop. There is also camera rotation with Q and E. You can use sprint and dodge to get away from the boss hits and the shelf stuff is distance based from the player so the player has to be a certain distance from the shelf to place an item by clicking with the mouse. but it is difficult on purpose to be chased and place or pickup items.
edit: Oh! also the wall transparency happens when the player goes behind a wall so you can see the dude lol