The Barbarian's true strength is in his ability to support. Through shouts and games with others, this is an most effective class when it comes to D2R Items supporting teammates, as well as incorporating the Paladin's aura. When playing with other players take care to don't give Barbarians a Barbarian more than a cursory glance.
Assassin.One of the two classes that were introduced to the game later (with the Lord of Destruction DLC), the Assassin is a fascinating tale of character, but she falls short in terms of certain abilities she has in game. This class of characters is well-known for the use of devious combat techniques and diverting.
Much like the Barbarian, melee tanking/attacking is not an option when the battle gets difficult. To get the Assassin function, you can try the Trapper build. It will make her a caster, thus giving her the ability to finish the game in a solo. With three different damage types that are used in the build no monster's immunity will be enough.
Amazon.The Amazon is a versatile class that is extremely skilled using weapons that range. It's a popular choice among Diablo 2 newbies and veterans alike, because she's very easy to get used to, yet is an obstacle to master. Aside from using bows and crossbows Amazon is also extremely effective as a javelin-using build and.
Each class requires more thought before completing an build. Many of her skills have diminishing returns, so new players may have a tough time deciding when to buy D2R ladder items cut off a skill prior to taking it to the max. But, well-rounded players will like that the Amazon has a good handle on every skill proficiently.