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