Here is the full list of all 26 Blitz Guard achievements.
Complete the bloody palace
Complete the prologue
Destroy the Magic Summoner
Destroy the Arcane Summoner
Destroy the Ancient King
Slay the Sealed Farty Zombie
Slay the Undead Fury Zombie
Erradicate Corrupted Soma of the earth
Defeat Bifröst
Confront the Bald ur
Defeat the Maelstrom
Punish Duque de Fire
Punish the Big Mammön
Become the superuser
Defeat Thanatos
Put on the green wig
Put on the red wig
Put on the blue wig
put on the black wig with green letters
confront death without having used wigs
Upgrade one stat
Improve the strength attribute
Improve the vitality attribute
Improve the arcane attribute
Improve the stamina attribute
All Trophies Obtained