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