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