Full list of all 46 Wizard with a Gun achievements.
The base game contains 35 achievements, and there are 2 DLC packs containing 11 achievements.
Restore the Chronomancer Wheel with 53 gears while hosting or in singleplayer
Defeat the Harbinger of Chaos
Defeat the Blind Huntress
Kill or Charm a Mage Hunter
Craft Burning or Shocking Bullet Level 20 or higher
Defeat Kolanna
Kill or Charm a Kingsguard
Restore the Chronomancer Wheel with 35 gears while hosting or in singleplayer
Survive in the apocalypse for 5 minutes
Craft an enchantment to dash further on your boots
Craft an enchantment to reduce gun cooldowns on your gloves
Defeat Orion
Craft the second or greater inventory expansion enchantment on your backpack
Kill or Charm a Fell Anarchist
Craft Burning or Shocking Bullet Level 10 or higher
Restore the Chronomancer Wheel with 20 gears while hosting or in singleplayer
Kill or Charm a Construct Mechana
Electrocute a creature through water
Defeat the Mechantress
Restore the Chronomancer Wheel with 10 gears while hosting or in singleplayer
Restore the Chronomancer Wheel with 1 gear while hosting or in singleplayer
Shatter the ice on a frozen creature
Ignite a creature doused in oil with a fire bullet
Slam a creature with force accumulated in stasis
Heal a charmed creature
Use a poison finisher bullet on a poisoned creature
Craft Cold or Force Bullet Level 10 or higher
Craft Cold or Force Bullet Level 20 or higher
Craft Poison or Fear Bullet Level 10 or higher
Craft Poison or Fear Bullet Level 20 or higher
Craft Charming, Healing, or Repair Bullet Level 10 or higher
Craft Charming, Healing, or Repair Bullet Level 20 or higher
Craft the third or greater health regeneration enchantment on your amulet
Craft the fifth or greater max health increase enchantment on your robes
Survive until Day 5 while averting the apocalypse
Turn in a Bounty
Earn 100 Bounties
Earn a Boss Bounty
Earn a Golden Bounty
Build a Bounty Mechana
Encounter a Surprise Event