Here is the full list of all 20 Haunt Chaser achievements.
Send 60 Chasers To Purgatory
Send 40 Chasers To Purgatory
Complete 80 Objectives
Complete 45 Objectives
Complete 20 Objectives
Win 20 Games
Send 20 Chasers To Purgatory
Revive Chaser 10 Times
Find Treasure 3 Times
Use Seal 10 Times
Get Sent To Purgotary 10 Times
Place Ward 15 Times
Hit The Trap 10 Times
Banish Entity 5 Times
Trap Entity 6 Times
Take 50 Photographs
Use Speed 20 Times
Teleport 20 Times
Revived By Friend 3 Times
Hear 15 Sounds