Here is the full list of all 26 Hitman GO: Definitive Edition achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
Used a hint, ignored the instructions but finished the level...
Kill 100 Turning (Teal) enemies.
Kill 100 Pair (Grey) enemies.
Kill 100 enemies using the Silverballers.
Die at least 200 times.
Complete all objectives in the St. Petersburg Stakeout Chapter.
Complete all objectives in all chapters without using a single hint.
Complete all objectives in the opera chapter.
Complete all objectives in the sixth chapter.
Play for at least 100 turns in a single level.
Crush three enemies under a falling statue.
Complete all objectives in the fourth chapter.
Complete all objectives in the third box.
Get chased by three guard dogs simultaneously.
Complete all objectives in the second box.
Complete all objectives in the first box.
Kill 100 Patrol (Yellow) enemies.
Get pushed 100 steps.
Play for at least 5,000 turns.
Kill 100 Static (Blue) enemies.
Worn all three disguise types.
Killed an enemy by emerging from a Secret Passage.
Play for at least 1,000 turns.
Throw an object without alerting anyone.
Kill 5 enemies at once.
Killed 2 enemies at once.