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