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