Everyone already knows that the host can unlock all challenges with the code_post_gfx.ff modded. Well I decided to figure it out for all people and I found out that it's semi-impossible. Why you might ask b/c the game only lets you unlock 50 challenges per game. During the game while it's running all the challenges it will end the game and say reached limit of ref strings. So I don't know if you can do 50 challenges then end the process then start a new one and unlock the next 50. I haven't tried that yet but I will.