This is an impossible game. The space to claim the grappling hook is on the other side of a fire pit on Adventures 00 and 01. Adventure 00 allows you to turn over the Shenbot Card, and you can't jump the fire pits to get to C or the end of C because you don't have the boots. Adventure 1 uncovers the Shenbot on Card C and the Music Box on Card D. The Grap'l Hook and Jump Shoes are on the far side of fire pits and cannot be accessed unless you have the Grap'l Hook or Jump Shoes.
Also, where are the monsters and the fight/eat functions?
Game has potential if only one could play it.
Thanks for pointing this out! The error is actually with how the backs match up for the Discoveries and Items. Right now it's matching Item 01 (Jump Boots) as Discovery 02 and Item 02 (Grappl'n Hook) as Discovery 03. This makes solving it impossible, as you said. I'm going to fix that right now.
They should really fire the quality control person on this game!