Here is the full list of all 75 Project Warlock II achievements.
Kill 1000 Bugdemons.
Find all secrets on all levels.
Kill 500 Spiderlings.
Kill 500 Weavers.
Kill 1000 Knights.
Kill 1000 Pigdemons.
Kill 500 Spideys.
Kill 10 000 monsters with headshots
Kill 500 Bugdemons.
Complete the first episode on the standard difficulty.
Kill 500 Knights.
Kill 1000 Boneys.
Kill 500 Pigdemons.
Complete the first episode on the hard difficulty.
Complete the first episode on the hardcore difficulty.
Kill 1000 Succubuses.
Kill 500 Boneys.
Complete the first episode on the easiest difficulty.
Find all secrets in E1M12.
Fight through the ruins.
Find all secrets in E1M11.
Find Caroline.
Find the Amid Evil character.
Find the Hedongirl.
Kill 500 Succubuses.
Reach the ruin complex.
Find all secrets in E1M5.
Kill 1000 monsters with headshots.
Send 1000 ghouls back to the grave.
Find the Prodeus guy.
Fight through the old village.
Find all secrets in E1M4.
Find the Duskdude
Travel through the ancient forest.
Find all secrets in E1M3.
Kill a Knight with a Claymore.
Achieve at least 30% of headshot percentage on any level
Find all secrets in E1M1.
Kill 500 monsters with headshots.
Find the Nightmare Reaper Character
Send 500 ghouls back to the grave.
Escape your castle.
Find the Square in the corner.
Find your first Bestiary entry.
Kill 100 monsters with headshots.
Kill 100 monsters.
Find your first secret.
Defeat the Necromancer
Kill 500 Shamblers.
Kill 1000 Shamblers.
Kill 500 Cacobots.
Kill 1000 Cacobots.
Kill 500 Necromages.
Kill 1000 Necromages.
Kill 1000 Spiderlings.
Kill 1000 Spideys
Kill 1000 Weavers.
Kill the Necromant 100 times.