Here is the full list of all 151 Vampire Hunters achievements.
Slay the Experimental Fiend for the second time
Reach combo level 100
Slay 2 enemies with a single shot
Slay 2000 enemies
Slay the Batilla
Reach combo level 80
Reach combo level 50
Fill 25 entries in the Collection
Reach level 25
Earn 50 coins in a single run
Hit 500 crits
Survive 5 minutes in a single run
Slay 1000 enemies
Reach level 10
Wield 5 primary weapons at once
Hit 10 consecutive headshots
Survive 8 minutes in a run with the Leo and Taurus Constellations
Hunt 4 Elites in a run
Reach combo level 500 while playing with the Aquila Constellation
Wield 10 Revolvers at once
Hunt a Massive Green
Get mowed down by monsters 5 minutes from winning
Hunt a Mantodie
Hunt 3 Elites in a run
Hunt a Sultan of Spheres
Hunt 10 Hands of Titan
Hunt 1 Minion
Survive 20 minutes in a run
Hunt 2 Elites in a run
Hunt 50 Armogs
Survive 15 minutes in a run
Hunt 20 Enraged Werewolves
Hunt 2 Armogs
Hunt 1000 Ophidic Reapers
Hunt a Beardedon
Hunt 50 Uga Blugas
Reach combo level 400
Hunt 30 Werewolves
Hunt 400 Ophidic Reapers
Hunt a Skullship
Hunt 15000 monsters
Survive 10 minutes in a run
Hunt 8000 monsters
Get 3 Points of Interest in a run
Hunt 500 Punkeys
Hunt 500 Sinners
Hunt 500 monsters
Get mowed down by monsters
Get a Health Potion
Reach combo level 250
Reach combo level 500
Reach level 50
Slay a Bat
Slay a Gremlin
Slay a Bat Carapace
Slay a Demon
Slay a Skull
Slay a Cursed Skull
Slay 5000 enemies
Slay 10000 enemies
Slay 1000000 enemies
Earn 100 coins in a single run
Recover a total of 1000 HP
Reach prestige with Gunslinger
Reach prestige with Elementalist
Reach prestige with Machina
Reach prestige with Sniper
Reach prestige with Expulgator
Reach prestige with Tommy
Survive 10 minutes in a single run
Survive 15 minutes in a single run
Survive 15 minutes with 10 characters
Survive 30 minutes with 10 characters
Slay 10 enemies with a single Blood Rush
Slay the Titan
Win with Orion constellation activated
Win with Horologium constellation activated
Win with Cassiopeia constellation activated
Equip 10 primary weapons, 2 secondary weapons, 1 passive and 3 relics
Reborn one time
Reborn two times
Reborn three times
Reborn four times
Reach combo level 750
Wield 10 primary weapons at once
Win Colonnade in 4 minutes or less
Win The Great Hall in 5 minutes or less
In The Great Hall, destroy the first door in 30 seconds or less
In The Great Hall, win without taking damage from traps
Slay 500 Vampire Servants
Slay 100 Imps
Slay 75 Skeleton Archers
Slay 25 Knight Legions
Slay 75 Phantom Skulls
Slay 30 Banshees
Reach prestige with Scientist
Win with only one weapon
Reach prestige with Guerrilla
Reach prestige with Android
Reach prestige with Firefighter Priest
Reach prestige III with Soldier
Win with Aquarius constellation activated
Win with Camelopardalis constellation activated
Win with Draco constellation activated
Win with Taurus constellation activated
Win with Leo constellation activated
Reach prestige with Huntress
Reach prestige with Pyromaniac
Reach prestige with Reaper
Reach prestige with Berserker
Reach prestige with Reckless
Reach prestige with Grenadier
Survive 10 minutes in a run with at least 5 active Constellations
As Scout, survive for 20 minutes using the Leo constellation and at least one Batbat
Win a level
Win a level with no active Constellations
Win a level with at least 5 active Constellations
As Berserker, spend 10 minutes of a single run with 20% or less HP using the Scorpius constellation
Survive 20 minutes in a run with the Chameleon Constellation
Survive 45 minutes in a run
As Paladin, win a run using the Aquarius constellation, the Lightbringer weapon, and collect a minimum of 5 health potions
Win a level with the Cetus Constellation
Survive for 8 minutes in the Brotherhood Chateau
Survive for 12 minutes in the Cursed Necropolis
Hunt a Meteor Mage with an active Pegasus Constellation
Reach level 15 with Scout
Reach level 30 with Scout
Reach level 50 with Scout
Reach level 75 with Scout
Reach level 100 with Scout
Reach level 125 with Scout
Reach level 150 with Scout
Reach level 200 with Scout
Reach level 15 with Paladin
Reach level 30 with Paladin
Reach level 50 with Paladin
Reach level 75 with Paladin
Reach level 100 with Paladin
Reach level 125 with Paladin
Reach level 150 with Paladin
Reach level 200 with Paladin
Reach level 15 with Berserker
Reach level 30 with Berserker
Reach level 50 with Berserker
Reach level 75 with Berserker
Reach level 100 with Berserker
Reach level 125 with Berserker
Reach level 150 with Berserker
Reach level 200 with Berserker
Survive for 14 minutes in the Village Yard