Below are the side quests that can be obtained in the Mechonis Field!
Best Boots
Obtained: Speak with Bozatrox at Machina Refuge after completing the To My Loved One… side quest
Objective: Collect 2 Reinforced Jets and 2 Reinforced Plungers
The Reinforced Jets are dropped from Mechon carrying swords and shields on Mechonis Field. The Reinforced Plungers are dropped from large bipedal Mechon in Mechonis Field. After collecting the items, return to Bozatrox to complete the quest.
Monster Quest (timed)
Obtained: Speak with the Garrisoned Troop at Machina Refuge
Objective: Defeat 3 M66/TRICK Mechon in Mechonis Field
The M66/TRICK Mechon can be found near the 1F Main Power Switch landmark. Defeat them to complete the quest.
Challenge Quest 1 (timed)
Obtained: Speak with the Garrisoned Troop at Machina Refuge
Objective: Defeat Revolutionary Bifrons near Power Supply Area 1 in Mechonis Field
Revolutionary Bifrons is a level 60 unique enemy, which is east of the Upper Bulkhead Bridge landmark. Defeat it to complete the quest.
Challenge Quest 2 (timed)
Obtained: Speak with the Garrisoned Troop at Machina Refuge
Objective: Defeat Infernal Crocell near Power Supply Area 2 in Mechonis Field
The Infernal Crocell is a level 58 unique enemy that is located on the 4th Floor, which is west of the Upper Bulkhead Bridge landmark. Defeat it to complete the quest.