Here is the full list of all 114 Heroes of Hammerwatch achievements.
Reach level 40 with a Ranger.
Reach level 40 with a Priest.
Reach level 40 with a Warlock.
Reach level 40 with a Wizard.
Reach level 40 with a Witch Hunter.
Reach Sergeant rank with a mercenary.
Beat the Moon Temple in NG+.
Block ten damage instances with your Lunar Shield.
Beat the Forsaken Tower with a mercenary.
Beat the Moon Temple.
Defeat the Agents.
Purchase something at the Legacy Shop.
Reach Corporal rank with a mercenary.
Defeat Krilith's Wolf
Recruit a mercenary private.
Defeat the Elder Wisp.
Obtain 10 Blood Rites at the same time.
Reach level 40 with a Thief.
Win a legendary item by gambling.
Construct the statue of Cedric.
Kill 75,000 Aberrations.
Beat the Forsaken Tower in NG+++++.
Have your companion collect 1,000,000 gold.
Reach level 20 with a Witch Hunter.
Kill 10,000 Constructs.
Craft an item using the Magic Furnace.
Try your luck at item gambling.
Use a Blood Altar.
Acquire a companion.
Beat the Forsaken Tower in NG++++.
Reach level 40 with a Paladin.
Reach level 20 with a Ranger.
Beat the Forsaken Tower in NG+++.
Attune 10 items at the Magic Anvil.
Reach level 20 with a Wizard.
Defeat the Vampire Lord.
Beat the Forsaken Tower in NG++.
Kill 100,000 Undead.
Consume 10 drinks at the Tavern.
Craft 10 items at the Magic Anvil.
Beat the Forsaken Tower in NG+.
Reach level 20 with a Sorcerer.
Reach level 20 with a Thief.
Find the Magic Anvil.
Kill 50,000 Beasts.
Reach level 20 with a Priest.
Reach level 20 with a Paladin.
Fully upgrade the Town.
Use a monolith.
Find 1,000,000 gold.
Receive a reward from the Imp.
Something good happened...
Chain a combo of 500 kills.
Unlock the prison cells.
Beat the Forsaken Tower.
Defeat the Stone Guardian.
Defeat the Warden.
Defeat the Three Councilors.
Defeat the Watcher.
Defeat Thundersnow.
Unlock the Priest.
Unlock the Thief.
Unlock the Wizard.
Reach level 20 with a Warlock.
Unlock Combo.
Find 1,000 ore.
Find 50 secrets.
Reach level 40 with a Sorcerer.
Reach level 60 with a Witch Hunter.
Beat the Moon Temple in NG++.
Beat the Moon Temple in NG+++.
Beat the Moon Temple in NG++++.
Beat the Moon Temple in NG+++++.
Beat the Pyramid of Prophecy with a mercenary.
Beat the Moon Temple with a mercenary.
Reach Lieutenant rank with a mercenary.
Reach Captain rank with a mercenary.
Reach Major rank with a mercenary.
Reach Colonel rank with a mercenary.
Reach General rank with a mercenary.