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