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