Here is the full list of all 29 United Assault - there are Normandy '44 achievements.
Complete the Training
Kill an Enemy
Get killed in a mission
Kill an enemy with a headshot
Achieve a long range kill
Exfiltrate out of a mission
Destroy a mission objective
Pickup a mission objective
Complete the bonus campaign
Kill an enemy with your knife
Enter Chef-du-Pont
Enter Carquebut
Enter Liesville-sur-Douve
Enter Ruins
Enter Houseville
Enter Saint-Côme-du-Mont
Enter Angoville-au-Plain
Enter Vierville
Enter Sainte-Marie-du-Mont
Enter Boutteville
Enter Sébeville
Enter Turqueville
Enter Écoquenéauville
Find the Lake
Destroy each FlaK 88 on the coastal line
Enter Audouville-la-Hubert
Enter Brucheville
Enter Brévands
Enter Bucaille