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