Here is the full list of all 20 Ages of Mages: The Last Keeper trophies - there are 4 bronze, 6 silver, 9 gold and 1 platinum.
Congratulations!
Kill 10000
Complete game.
Rescue 18 soldiers in "Dragon Lair"
No Injured within battle, 20 minutes.
Pass "Spiral Cliff" with no killing
Hits 12 enemy with one "Phoneix"
Driving a raft in "Dusk Island" and no damage.
Got 10000 coins
Kill 3000
Honor your first
Frozen 12 enemy with one "Frost"
Rescue teammate 15 times
30 consecutive hits
15 consecutive hits
10 consecutive hits
Kill 200