Here is the full list of all 30 Seraph achievements.
Score among the top 75% on a Daily challenge.
Score among the top 25% on a Daily challenge.
Post a score in Survival mode
Kill 888 Daemons.
Kill the Herald.
Kill the Herald at difficulty 6.0 and above.
Reach difficulty 9.0 in Survival or New Game.
Equip a Miracle other than Orb or Repel.
Reach difficulty 8.0 in Survival or New Game.
Unlock a weapon, Ward or Miracle through Transmutation
Kill an 'enhanced' Elite (Bloody, Tainted, Dark).
Unlock Daemonsight through Transmutation
Destroy a Fountain of Terminus.
Kill 88 Daemons.
Reach 6 pips on the difficulty meter.
Attach a Shard to an Oath.
Slay a Lieutenant of Terminus.
Collect 25 story logs.
Kill 50 enemies under the influence of the Double Damage Orb
Transmute the MKII version of each weapon.
Defeat the final threat to Seraph.
Collect 50 story logs.
Collect 75 story logs.
Transmute a MK4 weapon.
Upgrade a Blessing to rank 5.
Kill 8,888 Daemons.
Score among the top 10% on a Daily challenge.
Obtain a Supreme Shard.
Defeat the final threat to Seraph at difficulty 8.0 and above.
Seraph is reborn.