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