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