Here is the full list of all 49 FIVE: Champions of Canaan achievements.
Defeat fifty enemies during a round using the ‘Spear Flurry’ ability
Unlock all abilities for one weapon type
Complete ‘A New Champion’ story event
Complete ten rounds in succession without going back to the Jerusalem Market
Complete ‘A Moral Quandary’ story event
Collect all artifact weapons for one weapon type
Survive ten rounds without being defeated
Reach Level 2 with an arena character
Defeat your first Boss
Complete your first round
Collect all boss artifacts
Collect all boss artifacts for one boss
Unlock all abilities for each weapon type
Defeat fifty Captains
Defeat one hundred Generals
Defeat two hundred and fifty Heavy Hitters
Complete five Chicken rounds
Complete two hundred rounds
Donate one hundred thousand shekels
Donate one million shekels
Donate one thousand weapons
Successfully use the 'Reeling Hooks' ability twenty-five times during a round
Successfully use the 'Bull Rush' ability twenty-five times during a round
Successfully use the 'Shield Bash' ability thirty times during a round
Complete a round (after round 100) using only primary and secondary attacks
Defeat fifty enemies during a round using the 'Hornet Pot' ability
Defeat fifty enemies during a round using the ‘Cyclone’ ability
Defeat fifty enemies during a round using the ‘Headsplitter’ ability
Defeat thirty enemies during a round using the ‘Flying Backstab’ ability
Defeat fifteen enemies during a round using the ‘Charged Shot’ ability
Set forty enemies on fire during a round using the ‘Fire Shot’ ability
Reach Level 20 with an arena character
Reach Level 50 with an arena character
Complete ‘A Crushing Defeat’ story event
Complete ‘Fatherly Advice’ story event
Complete ‘Zithri's Gauntlet’ story event
Complete ‘Mitonia’s Last Stand’ story event
Click the random animals in the Jerusalem Market one hundred times
Listen to all of Eder’s stories in the Jerusalem Market
Defeat Gabar boss
Defeat Asher
Defeat Alpha Lion boss
Defeat Kerak
Defeat Kenaz boss
Defeat Pithon
Defeat Moreh boss
Defeat Naphal
Defeat Lacham boss
Defeat Seir