Here is the full list of all 80 Idle Wizard achievements.
Unlock Spellhound
Unlock Daemon
Unlock Golem
Reach Apprentice level 5
Unlock Zombie
Unlock Pixie
Buy first upgrade
Unlock Druid
Unlock Demonologist
Unlock Necromancer
Unlock Arcanist
Unlock Prodigy
Unlock Voidmancer
Unlock Exorcist
Unlock Chronomancer
Unlock Umbramancer
Unlock Alchemist
Unlock Ironsoul
Unlock Abolisher
Unlock Shaman
Unlock Heretic
Unlock Oni
Unlock Archon
Unlock Temporalist
Unlock Desolator
Unlock Homunculus
Unlock Voidfiend
Unlock Devourer
Unlock Geode
Unlock Interrogator
Unlock Shadow Stalker
Unlock Ent
Unlock Risen Giant
Unlock Simulacrum
Unlock Pit Lord
Unlock Anima Construct
Unlock Voidterror
Unlock Hungerer
Unlock Archivist
Unlock Ley Keeper
Unlock Ebonsand Behemoth
Unlock Arcanaworg
Do first Exile
Total amount of Exiles 100
Total played time 1 day
Complete first challenge
Craft 100 items
Unlock attributes
Unlock Trials
Unlock craft
Unlock enchantment
Reach Legacy level 10
Reach Legacy level 25
Reach Legacy level 50
Unlock weapons
Unlock Herald of Rot
Unlock Living Sin
Unlock Mechanos Apexis
Unlock Voidlight Amalgam
Unlock Nix-Instability
Unlock Greater Chimaera
Complete all Challenges
Reach Expedition level 100
Do first Change Realm
Reach Animatealia level 100
Reach Altermutus level 100
Reach Ardourium level 100
Reach Veritallios level 100
Reach Procreogenus level 100
Reach Tempoaeverum level 100
Reach Chaos level 100
Reach Cerebros level 100
Reach Legacy level 75
Reach Legacy level 100
Unlock Pantheon
Unlock minor Gods
Unlock Void Memetics
Unlock Catalyst Memetics
Unlock Mana source Memetics
Unlock Ascension Forms