Here is the full list of all 41 God's Trigger achievements worth 1,000 gamerscore.
Collect all achievements.
Complete all levels of Chapter 1.
Complete all levels of Chapter 2.
Complete all levels of Chapter 3.
Complete all levels of Chapter 4.
Complete the story mode.
Kill 666 enemies.
Perform 5x combo kill.
Perform a 10x combo kill streak.
Perform a 20x combo kill streak.
Finish one non-tutorial level without dying.
Finish all levels with an A grade.
Finish all levels with an S grade.
Finish a level in Co-Op mode.
Finish all chapters in Co-Op mode.
Finish all levels in Arcade mode.
Collect one full set of Helljoy Magazine pages.
Collect all Helljoy Magazine pages sets.
Kill 3 enemies with 1 shot of the revolver.
Steal 30 weapons using Judy's upgraded chain.
Make possessed by Mind Control opponents to kill 30 other enemies.
Drain 6 enemies into a single Black Hole ability.
Confuse enemies with the Mirror Image ability 30 times.
Kill 30 enemies with the Exploding Corpses ability.
Kill 4 enemies at once with an exploding projectile shot through the Fire Wall.
Kill 3 enemies at once when using the Invisibility ability.
Kill 30 enemies with a deflected bullet using the upgraded Divine Shield ability.
Freeze 6 enemies in time simultaneously using the Time Freeze ability.
Smash 10 enemies against the wall with upgraded Holy Push ability.
Catch 30 enemies in a trap using the Time Bubble ability.
Kill 5 enemies with Judy's upgraded teleport ability.
Kill 5 enemies by knocking out doors with Harry's upgraded dash ability.
Kill 3 enemies with a single sniper bullet in chapter 3 level 4.
Kill all enemies in chapter 4 level 1.
Stealth kill 20 enemies.
Kill 20 marked enemies.
Make 30 Synchro Kills while playing in Co-Op mode.
Perform 10 executions.
Reach level 30 with Harry.
Reach level 30 with Judy.
Find all of the hidden perk chests.