Here is the full list of all 35 Shadow Man Remastered achievements.
Defeat Legion and stop the apocalypse
Reach Shadow Level 10
Defeat Jack the Ripper
Offer Cadeaux to all life altars
Defeat Milton Pike
Find the second Violator
Defeat Avery Marx
Defeat Marco Cruz
Defeat Victor Batrachian
Bestow nightfall to Liveside
Acquire Swim Gad
Find the Violator
Defeat a True Form
Reach Shadow Level 7
Acquire Walk Gad
Unlock a Secret
Acquire Poigne
Reach Shadow Level 4
Acquire Touch Gad
Find a piece of the L'Eclipser
Find an Accumulator
Shoot down all helicopters in Gardelle County Jail, Texas.
Find a Retractor
Offer 100 Cadeaux to the Loa
Defeat Yort
Find a Voodoo weapon
Find and take a Dark Soul
Open a Soul Gate
Fail to stop Legion from bringing about the apocalypse
Open all Soul Gates
Unlock all Secrets
Save the world without dying
Find every Cadeaux
Defeat the Seraph Queen
Enter the horror again through the hardest of trials.