Here is the full list of all 52 Confrontation achievements.
Finish the solo campaign
Play Taelyn for 4h
Play Haeth for 5h
Reach level 40 with a unit
Finish Chapter 3
Play Nekhys for 6h
Kill 20 Belisarius
Kill 20 Biopsists
Kill 10 Ritualists
Play Lothaire for 5h
Play Lanwys for 6h
Kill 10 Sibyls
Earn 3,000,000 XP points
Suffer 100 stuns
Play Nemrod for 5h
Kill 10 Pack leaders
Reach level 30 with a unit
Play Melian for 5h
Play Caan for 5h
Play Darius for 5h
Kill 100 Wolfen
Play Dalon for 6h
Play Zelia for 6h
Play Fera for 5h
Kill 15 Totem bearers
Kill 15 Fanatics
Finish Chapter 2
Use Exorcism 50 times with Nemrod
Suffer 50 fears
Kill 15 Initiates
Let your units fall to the ground in agony 150 times
Open a character data sheet 100 times
Reach level 20 with a unit
Kill 100 Orcs
Use Fireball 50 times with Nekhys
Finish Chapter 1
Kill 20 Dasyatis
Use Wave of Fervour 50 times with Lothaire
Use Meteor 50 times with Zelia
Reach level 10 with a unit
Use Shadow's kin 50 times with Fera
Spend 10 Attribute points
Make 50 quick loads
Let Zelia fall to the ground in agony 25 times
Use Holy Prayer 50 times with Darius
Launch the game credits
Kill 100 Scorpions
Use Divine Favor 50 times with Lanwys
Kill a Mecasyatis
Make 50 quick saves
Spend 10 Weapon points
Spend 10 Armor points