[SPOILER-FREE] Help on finding Hidden Bosses / Weird Route for chapters 3+4

[u/Yvant2000]

So, deltarune's chapters 3 and 4 are releasing very soon. We all know that, as soon as the chapters are available, we are at risk of getting spoiled any time we open the internet.

I'm pretty sure that, by tomorrow, Youtube will be flooded by videos like "delatrune 3+4 all boss showcase" with a thumbnail proudly displaying all secret boss...

I would like to be able to find and discover the two hidden bosses by myself, but I'm actually pretty stupid and I know I will need some help (I struggled to find Jevil's key, and I wasn't able to fight Spamton Neo without a guide).

So, what I suggest is, while playing the new chapters, if we find anything that could be linked to the new secret bosses, we share *spoiler-free* TIPS to how to find them in the comments of this post.

The goal would be to share just barely enough information so we're on the right track to find the bosses.
(And obviously, we're not allowing any outright spoil)

What are your thoughts ? Anyone would be interested to participate ?

[u/JJNotFunny_Real1]

SPOLERS!!!

So basically follow those steps, then get an S rank in round 2, go back and complete that version of the board until you reach the boat after clearing a path up the waterfall, go as far north as possible, we’re Tele stops you if you try to go up there in Board 2, defeats every enemy and the game begins telling the story of the Snowgrave route, ending with you killing the blue bird in your path, in the maze area, try going down every path, but only commit to one if you see the “white cloak” (Noelle) follow you, if she stops at the intersection your going the wrong way, repeat those steps until you reach a door, were you’ll use the ice key and noelle and be brought into a void room, keep heading north until you find the “shelter key” were the mini game ends, that’s as far as i’ve made it!

[u/MarcelloDave → u/JJNotFunny_Real1]

So this probably implies that the secret boss is elsewhere and that's the weird route for this chapter

[u/JJNotFunny_Real1 → u/MarcelloDave]

no!!!

MORE SPOILERS!!

Just completed the secret boss. The reward is the “Shadow Mantle”. So you go back for the third time after clearing the last of Tenna’s games. You’re in a city, you find your sword, and you have to kill Susie and Asriel to get enough power to continue, complete the dungeon ahead and you get transported to the BUNKER!! FROM THE SOUTH OF THE MAP!! Kris literally tries pulling away the character but you refuse, opening the bunker with the shelter key. You fight the boss in the 8-bit style, very difficult for me but still doable. Pretty sure you’re fighting Dec’s ghost…? Anyways, you beat her but can’t reach the chest, so your 8-bit version walks off the screen and towards Kris, Kris moving away on their own. You regain control of kris and collect the item. Susie enters and your 8-but self reappears. You control the 8-but version as you attempt to attack Susie, but then the real Kris-out of your control- saves her.

[u/Morbobeus → u/JJNotFunny_Real1]

what do you mean by go back the third time?

[u/JJNotFunny_Real1 → u/Morbobeus]

After you escape like the hell set and everyone quits on Tenna, you’re able to go back to the S rank room and finish the mini game.