Succubus Successor: Delilah's Juicy Journey: H Unlock Help
Short answer
Suggested fix (unconfirmed): Use the blaster's finisher move to break the holy knight's shield without killing them. Then, blast them until the gauge is full.
The problem
im fine the Holy Knight destory shild but not sure Engrave
What players suggest
For the holy knight I was having the same issue breaking the shield would instakill them even with the other upgrades. For whatever reason the finisher move on the blaster will break their shield without killing them and then you should be able to do it by blasting them until the gauge is full. That's what worked for me at least.
If you use the Elf Witch's second skill you do half the damage and a lot more Incitement damage. You shoot like 5-6 times and you can trigger basically any enemy h-scene
Please read the (at this time, the most recent) News post for the game from september 25th, titled "《Succubus Successor》A Brand-New Boss Arrives!". It will explain the two different ways to start the encounter.
Suggested fix (unconfirmed): Teleport around the four biomes to check for a golden flash using the fire mage's second sigil, which indicates a missed area. Alternatively, look for hidden passages in rooms above unexplored sections or check behind destructible objects like boxes hiding switches.
Day One Fixes