Text based adventure game where you explore hundreds of locations in an attempt to uncover all the secrets. · By koshkamatew
If anybody has any idea, or if anybody found it, please post the way to do it here.
Talk to Jevil, then go to Monke HQ, to the shack, and take the key. Then, win the battle
Quantis is right, however you need the shack key after completing the steps. Just go to the basement and use the shard.
Also he didnt mention you have to heal and tire the boss.
By the way, i posted a tutorial detailing the exact way to get the ending.
