Sacred Haven of Debauchery

Archers don't really need to be able to take a lot of damage.

Well, it depends on how you look at it. In the case of the Swamp, lizards are considered better than their human counterparts precisely because of their toughness and resilience. Although, of course, this is not the most important parameter for archers. And the Medusas are really not that great, especially with such a low number of attacks.