Quick answer: At the camp before the Red Thread Barrier bell, the Iron Mask rises from 880 HP to 16,368 HP and the Gold Mask from 1,700 HP to 31,620 HP.
Enemy health in Cycle 1
Head from the First Meeting with Yu’er bell toward the Red Thread Barrier bell in Weeping Creek Valley. A camp sits directly on that path with a Throwing Brute, a Sword Brute, an Iron Mask and a Gold Mask, while four more Brutes wait on a lower shelf about 19.5 m below, away from the route.
On the first cycle, that camp is modest. The Sword Brute has 400 HP, the Iron Mask has 880 HP and the Gold Mask has 1,700 HP.
On Wayfarer, the lowest difficulty, each Throwing Brute and Sword Brute has 7,440 HP in Cycle 1. The Iron Mask has 16,368 HP, while the Gold Mask reaches 31,620 HP. For the three enemies appearing in both cycles, that is roughly 18.6 times their first-cycle HP.
Fighting the camp in Cycle 1
The four enemies along the route attack one after another, turning the camp into a linked fight. Approximate defeat times are 17 seconds for the Throwing Brute, 8 seconds for the Sword Brute, 31 seconds for the Iron Mask and 39 seconds for the Gold Mask.
Clearing the whole camp costs about 400 of Soul’s 3,538 HP.
The Gold Mask still drops Battle Wraps in Cycle 1. Its card is marked Offensive and reads “Increases damage dealt to enemies by 5%.”
Beyond the camp, the Red Thread Barrier bell is about 133 m on foot from the First Meeting with Yu’er bell. Ring it, and the map shows Weeping Creek Valley at Map Completion 9%.
