This Seeking Tech guide will explain how you can beat the Mask of Dark Earth without getting hit in Sly 3: Honor Among Thieves (2024) on PS5 and PS4.
Use the following video as a reference:
To need to run away from the giant possessed enemy until Bentley mentions that the bomb is ready. Afterwards, lure him over to the bomb. Once the boss is stunned, attack him.
Afterwards, you need to run away from the possessed enemy again until Murray mentions that he is ready with the barrel. You should then run over to Murray and let him stun the boss. You can then attack.
Keep repeating these steps to take care of the Mask of Dark Earth without getting damaged.