Here is the full list of all 17 Temporal Temple achievements.
Unlock Dan
Unlock Mary
Die 25 times
Unlock Big Tam
Unlock Jakarta
You found it!
Unlock Bone Boy
Use the chest three times in a single run
Jump 69 times in a single run
Last over 60 seconds in a single run
Watch the credits. Thanks!
Kill five Big Guys in a single run
Use the Healing Shrine to recover health
Purchase a weapon from the chest
Last at least 30 seconds in a single run
Kill a haunted enemy
Purchase an item from the shop