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