Archers have moderate hp, which some claim is too low, since most monsters past level(Maplestory powerleveling) 80 can kill an Archer in two hits or less. Some people quit once they reach this level(maple story meso), as they find it unfair and difficult to adjust. Most adapt to the changes as they slowly learn how to use multiple skills to increase their survivability. Every other class has some attribute that requires the usage of one or no skills to defend themselves in a critical situation. Warriors have pure hp, which allows them to take multiple hits on 80+ monsters.
Maplestory: Thieves have skills like high passive avoid, Meso Guard and Fake, which reduces the chances of getting hit by a large amount or allows the user to take multiple hits on 80+ monsters. Magic Users also like Warriors and Bandits can take multiple hits with Magic Guard and even have passive resistance skills. Again each of these classes only requires one or no actions by the player themselves. To fully understand what is trying to be conveyed, imagine a Skelegon right on top of a player. A warrior could stand there and take many hits, same for Chief Bandits and Magic Users.