Here is the full list of all 28 Further Still: Survivors achievements.
Earn 1000 gold in a single run.
Kill 1000 enemies in a single run.
Kill a tier 2 boss enemy.
Kill a tier 3 boss enemy.
Bye-bye Birkins!
Unlock the Allure.
Unlock the Cadmus.
Have the Mystic join your ranks.
Have the Armourer join your ranks.
Have the Dog join your ranks.
Have a Job Board put up.
Have the Portal Master join your ranks.
Have the Archivist join your ranks.
Have the Gambler join your ranks.
Kill a tier 3 Space Gecko
Have 10 powers active
Reach wave 40
Reach wave 60
Reach wave 80
Reach wave 100
Reach wave 20
Unlock the Pious Helm
Basically worthless.
If you got it, spend it.
You knew it was blood but you kept drinking.
Kill a tier 4 boss enemy.
Kill a Mage Boss
Have the Fatespinner join your ranks.