Here is the full list of all 46 Grand Kingdom trophies - there are 28 bronze, 15 silver, 2 gold and 1 platinum.
Obtained 20 flags.
Clear a Destination Quest without using field skills and items. (Spy Quests excluded)
Killed an enemy using knockback damage.
Finished off an enemy with an Assist.
Equip glasses on one of your units.
Upgraded equipment at the blacksmith.
Forged something at the blacksmith.
Visited each capital of the Four Great Nations.
You hired a new unit.
You are now affiliated with the Guild.
Killed 2 enemies simultaneously.
Attack an ally unit with an area-of-effect attack.
Congratulations on getting all the trophies!
You finally obtained a Golden Baku!
Synthesized equipment at the blacksmith.
Used Grit to avoid an enemy attack.
Removed every type of obstacle on the field.
Met and received treatment from all 4 Healing Sisters.
Walked 20000 steps.
Went to all areas on a Travel Quest.
Defeated every Bounty Head!
Reach 99 in any stat on any unit.
Performed a Class Up!
Leveled a unit to level 99!
Learned every possible skill on one of your units.
Obtain 150 total policy points.
Achieved Mercenary Rank of S!
Knocked back a unit 8 character-lengths.
Launched a unit 9 character-heights.
Dealt 20000 damage with one attack.
Performed a 99-hit combo during one turn.
Achieve victory while morale is low.
Achieve victory with just 1 HP remaining.
Killed 3 enemies simultaneously!
Destroyed an object while a unit was on top of it.
Killed an invisible unit while it was still invisible.
Prepared to flee from battle, then fled after a unit died.
Die by stepping on a hazard.
An ally was eaten by a Slime.
A Rogue picked up a item containing explosives.
An ally Shaman reflected an attack to kill an enemy.
Win a battle using the Challenger's self-destruct skill, resulting in a double KO.
Defeated the Grand Mercenary Squad with a lower-level squad.
Adjust a quest's difficulty before clearing it.
Clear a Target Quest with just one unit.
Clear a Destination Quest without engaging in battle! (Spy Quests excluded)