1v1 (easiest): Sin, Cleric, Archer, Mystic1v1(hardest): Wizard, BlademasterMass PK (easiest): Archer by farMass PK (hardest): Assassin (survival is not exactly the easiest thing to accomplish), Cleric (supporting an entire squad is never easy and you usually get targeted frequently so you have to do your best to survive an assault) and Wizard (you still die in 2 hits to archers even if you one-shot the entire server)
hardest 1v1 by far wr close second mystic third seeker theres no other hard class other than those 3, u can basically get through 1v1'ing just by putting skills 1 after another and press 1 2 3 4 5 6 7 and enemy is dead (or not depends who u fight)easiest class in 1v1 is wb you are literally able to switch from a glass cannon in dragon dual axes dragonchild and str tome to almost unkillable build vit tome def poleaxe puzzle and tiger (mag ring for max tryhard) in 4 clicks keep switching that till the right moment when enemy is vulnerable and 1 hit himhardest in mass pk (30+ from each side) would be by far sin and mage but played right not 3 healers slaving you in that case even sin is easy in mass pk also a tip if your name isnt Mutilate Holiness zFlashx or BlackDeath and ur playing sin in mass pk i suggest u to make another char for that purposeeasiest in mass pk ea i dont think any1 has any doubt