Here is the full list of all 77 Tower of Time achievements.
Apply weakness to 20 enemies in one combat.
Use Blind Rage 2 times in one combat
Use Gravity Well 4 times in one combat
Place Exploding Runes 5 times in one combat
Cast Fireball 5 times in one combat
Kill 5 enemies in one combat with Blades of Justice
Use Dash skill 10 times in one combat
Use Teleport 5 times in one combat
Win a fight on level 4 or higher with 2 or less champions
Cast Elemental Barrage 25 times in one combat
Equip all Relics on one character
Transmute gems 30 times
Reach the ultimate attribute cap of 40 for any attribute.
Blind 20 enemies in one combat
Summon Mech 4 times in one combat
Deal 10000 damage in one combat with Rain of Arrows
Kill 3 enemies in one fight with Headshot
Apply 10 enchantments
Increase a single skill to a maximum.
Learn all 6 skills on a single hero.
Reach the 25 point attribute cap for any attribute.
Withdraw from battle 100 times.
Unlock Mystic Whisper.
Find all Sleath notes.
Craft 30 items
Unlock Blademaster Boron.
Resolve the conflicts between the Water and Earth Servants.
Apply 30 upgrades to items
Reach level 6 with any hero.
Solve the puzzle of the clocks.
Defeat Ancient Guard
Finish battle with full hp of whole party
Win battle with a caged hero
Unlock Runelord Rakhem.
Equip all items for a hero.
Deal 1000 damage with Ent in one combat
Upgrade Mage Tower.
Get Cindros Sword
Heal 1000 damage in one fight with Healing Totem
Unlock Druid Aeric.
Kill death reaper
Kill 100 enemies.
Win battle with just one champion
Upgrade Armory.
Use Teleporter.
Obtain a legendary item.
Heal hero which has less than 5 HP
Kill first enemy
Win battle when whole party has less than 10 HP
Win combat with health and mana of every champion under 10%