Wasn't there a chase by a giant worm as well?
LOL no. There was a giant worm in the game though and you had to get past him. To do so, you had to kill him and had to plan your attacks because his attacks did high damage. Though in my 4th play through, I cheated by jumping up through an opening in a wall (it took some time since the opening wasn't meant to be reached but it was possible) and attack the creature from behind so it could do nothing. I also noted that it had no visible behind - obviously because the player wasn't meant to be behind it while it was alive. The cave also had guts and blood all around it which the player would assume was the worm after the player kills it and it explodes. Though if you do the little trick I did, you'll find these guys and blood already exist.