Hey there, thanks for playing, I'm really glad you enjoyed it.
I felt like I explained the mechanics of the third part enough, because I didn't want people to feel like I'm holding their hands through everything. I don't like that, my games aren't tutorials. I wanted to give you the satisfaction of figuring out stuff by yourselves. I'm sorry if I didn't do it properly. Also, the three buttons in the main menu are added specifically to retry what part you want, in case you die, so you can just retry the third part again.
Awesome you liked the main menu, felt kinda proud of it myself :D
God bless.