Before fighting them, you need to double pump your nail and acquire the Quick Focus spell to speed up the healing time.
The battle will begin with you fighting the mantis in the middle. Once you defeat him, you will be fighting two others, but at the same time. After you successfully kill them, any uninfected mantis you encounter in the game will no longer attack you unless you start first.
Now let's move on to the three moves of the Lords.
The first is when they hang to the side of the beam and throw a spinning spear that acts like a boomerang.
When you're only fighting one mantis, you can usually make a couple of attacks after the spear is thrown, but always remember to jump over it when it comes back.
Once you start fighting the duo, stick to the center of the map and focus on avoiding the spinning spears as it is very difficult to attack enemies at this time. Instead, take a moment to heal yourself if you get hit, but do it quickly and remember to jump if the spears are too close.
The next move is the lunge of the spear. To avoid it, jump over the Mantis and then quickly attack from behind. Don't try to hit more than once, just get ready for the next attack.
The third movement is an attack from above, from which you need to dodge by stepping to the side. When the praying mantis lands, you can hit it. Again, do only one attack at a time.
Once you've memorized how to avoid the Lords' attacks and found your rhythm in the battle, it will be pretty easy to defeat the bosses.
