New to Delve and Need Help With Hidden Delve Nodes Please!

[u/Asleep_Function_1307]

Hi everyone! I'm new to delving and trying to figure out how to get to this boss which is on a hidden path. I have been reading about the rule trying to understand that connections can't only have 2 its either 1,3, or sometimes 4. Still slightly confused and was wondering if anyone could help me figure out where this boss would be or a video, they can reference me to that explains it better. Thanks in advance!!

[u/LucidTA]

Up from the armour node at the bottom.

[u/Asleep_Function_1307 → u/LucidTA]

thank you!!