Since Season 2 Patch note did not provide any informations of changes.

Because of that down below Informations manually checked by ABC

Official Link for Season 2 patch August 12th: Link

P.S If somebody who want access to text and translate please contact me via whatever source

Content

1. 16 Classes(Except Reaper, Scouter) Balance Changes from S1
   1-1. Blaster Skills and Hawkeye Skill Effect Changes
2. [PvE] Tier List August 12th ~ October 12th
3. Let me do Research more and update for this part
   ->
   [PvP] Tier List and Stagger Resist & Duration Patch

Season 2 PvE Tier

0 Support Holyknight, Bard, Warlord

Top DPS – Lost Ark Season 2