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