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