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