This guide might not be the most optimal but this is how I got it on 딱딱한.
Posse
- 사슴 (loot the locker)
- 플린 (take over the train w/ Gin)
장비
- 사슴 – pair card (I used Jack of Diamonds and Clubs)
- 플린 – atleast a +2 speed card or trinket
- 진 – Blue Dynamite and remaining + speed trinket & 카드.
Looting the Locker
Dismount Deer at the back of the starting carriage next to the ladder to the roof of the carriage behind (should cost 1 AP). Use his Wild Run to kill the nearest sharpshooter on the roof then kill the other sharpshooter. Then have him run straight to the locker and interact/loot it.
Taking over the train
Dismount and move Flynn to the 2nd carriage ahead of the starting carriage next to a ricochet target. Shadow Swap Gin then move him near the group of 4 bandits located behind the coal cart (2 AP) then use the Blue Dynamite which should kill 2 sharpshooters. Then with the bravado, have him go straight to the lever to interact.