>>281694338
I never watched season 2 so I can only assume you mean everything after leaving the village.
From what I recall (spoilers of course):
>Faputa joins the group permanently, big robo guy dies
>There's a chapter of Ozen and Habolg investigating some cave built into the cliff in an upper layer, no details given on what they found or why they were even there.
>Introduction to non-Delvers going into the Abyss, apparantly for money but not part of the Delver whistle system. Two characters introduced; Tepaste, chick with inverted nips you might have seen and some Gruff guy that likes to sing
>Riko and co. stumble upon corpse of singing guy, anons despair because he seemed like a cool guy
>Riko and co. stumble upon the White Whistle Srajo and her group which includes Tepaste who is now their (for now) willing prisoner, a guy that can alter the chemical makeup of his body (usually for acid hand attacks), two kids with no limbs and six nips that can just lop off your limbs with their mind Elfen-lied style, and a big cat-woman that gets powered-up by Srajo's whistle the same way Reg does from Riko's
>Bath-time chapter
>The two groups decide to descend together and reach the next layer where ascending means instant-death
>Giant monster that is super sneaky ambushes them and almost kills Nanachi
>As of current chapters Nanachi is still incapacitated and needs to recover so they camp in a cave
>While exploring back of the cave with cat girl, Reg sees a landscape full of Incinerator blasted holes and gets a flashback of a tanned female Reg calling him Onii-sama
>Sniper from a cult obsessed with making Tepaste into some sacrificial priestess ambush Reg and Cat girl. Proceeds to get smooshed after kids lop off her limbs then passing monster stands on her
There, now you are all caught up