Running this mission with average gears can be hard, but it's easier if you have a mass DEF debuffer like Cannon Main here. Debuff, kill, move forward, repeat your way to victory.
This is one of the easier and faster Dogon missions. Was a lot easier before the Three Gateways patch but still very doable with average gear (+4 evil weapons type average). No bosses to kill. Kill all mobs as you move north and destroy 4 buildings (prisons) to complete the mission.
Stalling NPCs with a stunner like Sheriff, Druid or Ody would give you extra turns to kill mobs here. Add a Hwarang to turn your Cata into a decent damage dealer, which is also very useful for wiping the final ambush in 1 turn.
Ranged mercs work well in this mission, particularly with Hwarang's Aura since you'd want to destroy a Summon Gate fast at one point.
There's also a crapload of traps to deal with although you only need to remember the 5 Net Traps at least.
This mission could be hard if you follow the preset mission sequence, but by clearing mobs in advance before accomplishing objectives it doesn't have to be.
One of the longer TBSs but it's fun to do this once in a while. With 4 Bosses, 3 Summon Gates, several minibosses and hordes of mobs, it has its fun moments.
Sounds like a lot of hassle but this mission is pretty easy if you know what to do. It also gives up to 50m+ EXP per merc which is pretty high for a level 132 TBS, and 14 reward boxes is more than the usual.
Spear Main + Hwarang + Champion.
The objective here is simple, kill the boss at the top right of the map. You can safely ignore the two other bosses.
In this sample run we also had to fight against the deadliest debuff in-game, Item Lag. Had my team stunned and unable to awake for some time.
Hwarang is a good substitute if you don't have a Tarkan as long as you bring a DEF debuffer here. In this run I used Ody as debuffer and Hwarang and Spear Main as damage dealers.
For less stress I'd suggest having double feast (NC+Unity) buffs and Chaotic Ruler title when running this.