Hello~ First off, to get the Ninja Ambush skill you must accept the quest from the Dark Lord. After accepting his quest , one should be able to talk to him again to enter a hidden map called " The Dark Lord's Practice Field" This is where one would be able to kill the 6 Dark Lord's Disciples. However.. this you cannot click Dark Lord and have the option to enter this map.. This needs to be fixed I know it's not that great of a skill but it is a skill! Second, Now that there are a bunch more 4th jobbers or people close to 4th job that aren't mages, The Newties map is going to be the main place of trainning for a while, specially for archers, corsairs, and thieves. Just hope the spawn speed becomes what it should be Thank you for reading this I know it's a bit long.
This works correctly. 1 - You need stay in a Party (SOLO or with the same JOB(THIEF)). 2 - You need talk first with Hellin 4th job NPC. (Take the Quest), latter go to Dark Lord NPC and complete the quest, reward 300.000 Exp. When u complete the First quest, talk again with Dark Lord and take the new Quest with the same name "The Nigth Warrior" when you started the second quest, Talk with DarkLord again and use the "Etc Option" and he warped to the train map. like this: