The second section is the hardest by far, if you finished the first section with no food and very little life, it will transfer over to the next section through the password, in some cases you effectively have a dead password since you cant even reach one of the abundant mushrooms without kicking it. Thankfully when your on a new section resetting the console will take you back to the beginning of THAT section, not the beginning of the game.
Kudos to you if you can get past the confusion, then boredom, of the third section, I've seen the ending, through Youtube videos (yes I had to cheat a bit for this review)... and my god, its disappointing.
Good luck, you're gonna need it, seriously. If you need a hand progressing, feel free to use some of the passwords I have in the screenshots here.