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