stay on the ground because the Lost Kin likes to jump. The strategy for defeating the Lost Kin is basically the same as the Broken Vessel. During the fight blobs of infection will spawn and chase after you. He has 1200 health and slightly more difficult attacks. The Lost Kin can be found in the same place as the Broken Vessel in the Ancient Basin. Once he's defeated you'll receive 300 Essence.

Eventually he'll be defeated and go crashing through the floor.

The Failed Champion will get knocked over a few times, giving you a chance to heal or hit his head for more soul. Standing in one of the corners may give you a chance to heal, especially if you have the Quick Focus charm equipped. You'll be able to get in a few strikes before he turns around. When he jumps towards you this gives you a chance to dash underneath. Each of his attacks will cause rocks to fall down from the roof but most of his attacks are very similar. The Failed Champion is a buffed version of the False Knight. You can use the Dream Nail on the other Maggots to replenish your soul before entering the fight. After jumping up break the wall to the right and use the Dream Nail on the dead maggot. The Failed Champion can be found above the arena where you fought the False Knight. The Fragile charms won't break if you lose a dream boss fight. The Quick Slash and Fragile Strength charms work will for this fight. You can often get in a swipe or two after each shockwave. You'll need to learn which moves create shockwaves so you can time your jumps over them. Zote has 1200 health for the first battle. He's still difficult to defeat as each time he falls over he'll create a shockwave and he also likes to teleport around the arena before slamming into the ground. Grey Prince Zote doesn't seem to know what he's doing and is constantly falling over.

He can be fough up to 10 times but only gives 300 Essence the first time you defeat him. Grey Prince Zote can be found in Bretta's basement back at Dirtmouth as long as you've rescued both Bretta and Zote and defeated Zote in the Colosseum of Fools.

Fragile strength hollow knight