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