Here is the full list of all 35 Idle Champions of the Forgotten Realms trophies - there are 22 bronze, 7 silver, 5 gold and 1 platinum.
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Complete 250 Free Play Runs
Complete 72 Variant Adventures
Defeat 1,000,000 Monsters
Complete 100 Free Play Runs
Complete 48 Variant Adventures
Beat Area 250 in any adventure or variant
Gain 1e40 Gold over all adventures
Complete 50 Free Play Runs
Gather 10B favor with Torm
Complete 24 Variant Adventures
Gain 1e32 Gold over all adventures
Beat Area 200 in any adventure or variant
Defeat 250,000 Monsters
Unlock 9 event Champions
Complete 12 Variant Adventures
Beat Area 150 in any adventure or variant
Gain 1e25 Gold over all adventures
Complete 10 Free Play Runs
Defeat a level 100+ boss within 10 seconds of starting the area
Shoot down 1,000 crows
Unlock 3 event Champions
Manually attack monsters 250,000 times (doesn't count familiars)
Complete 4 Variant Adventures
Beat Area 100 in any adventure or variant
Defeat 25,000 Monsters
Gain 1e18 Gold over all adventures
Use Minsc's ultimate attack
Purchase and assign a familiar
Unlock an event Champion
Obtain a Shiny (silvered) loot item
Gain 100,000,000,000 Gold (1e11) over all adventures
Defeat 2,500 Monsters
Complete the "A Brief Tour of the Realm" adventure
Gain 100,000 Gold (1e5) over all adventures