Here is the full list of all 29 Marlow Briggs and the Mask of Death achievements.
Gain entry to treasure room.
Perform a 50-hit combo
Solve the water puzzle
Kill enemy with air combo.
Survive train-cart ride
Execute an enemy
Destroy 10 enemies using only spirit knives
Kill enemy with enviromental objects (fire, barrel,...)
Defeat the Fire boss
Find a collectible
Knock enemy off ledge into their falling death
Earn upgrade point and spend it
Block enemy attack.
Get your first achievement
Kill enemy with deflected projectile
Defeat the Water boss
Solve the temple puzzle
Fly across the chasm
Defeat the Air boss
Defeat HellHound
Complete the game on any difficulty
Complete the game on Hardcore difficulty
Kill enemy with each magic
Kill enemy with each weapon
Launch enemy and kill it before it falls on ground
Glide for more than 6 seconds
Skip all cutscenes in one play through
Watch all credits
Find all collectibles in one play through