Rock Priest has the 2nd seal that will open the gate... He hits hard, and can also turn party members to stone which is instant death so need holy veil to negate it, it has decent HP too and will kill or nearly fatally wound most ppl if it can hit a single person of the party in both it's attacks. After opening the gate there are 2 guardians Kishin Ah and Kishin Um that will impede any who attempt to go any further. Kishin Ah (The left one ) looks like he is more physical attacker and hits for decent high damage, Kishin Um (The right one) I'd guess can use magic and maybe buffs/debuffs though I hardly saw any from it after that can get inside the main area of Kurehasu Temple.
At present, RunSaber1 has 262 views spread across 32 videos for Labyrinth of Zangetsu, and close to 21 hours worth of content for Labyrinth of Zangetsu published on his channel. This makes up 2.50% of the content that RunSaber1 has uploaded to YouTube.