Here is the full list of all 49 YAIBA: Ninja Gaiden Z achievements worth 1,000 gamerscore.
Kill 5,000 zombies.
Create 7 plague clouds.
Get 50 Legend arena scores.
Take no damage and achieve Legend status in 10 arenas.
Congeal 50 enemies with bile crystals.
Collect all the elemental shards.
Collect all the health shards.
Get 25 Legend arena scores.
Enter Ninja Time 50 times.
Collect all of the story collectibles.
Unlock all of Yaiba's upgrades.
Execute each type of enemy that can be executed.
Play Arcade Mode.
Complete Mission 7.
Yaiba sets aside time for traveling.
Complete Mission 6.
Harvest each type of enemy that can be harvested.
Cause each type of elemental effect on zombies and in the environment.
Yaiba gets some fresh air.
Cause 50 elemental effects.
Yaiba returns to the scene of the crime.
Yaiba doesn't sleep well.
Complete Mission 5.
Yaiba finds religion.
Yaiba brings up a good point.
Complete Mission 4.
Activate Bloodlust 10 times.
Yaiba joins the crowd.
Kill 1,000 zombies.
Yaiba directs traffic.
Throw 50 zombies.
Complete Mission 3.
Chain 5 or more executions together.
Yaiba gets his hands dirty.
Complete Mission 2.
Destroy an obstacle with elemental effects.
Yaiba reveals a family secret.
Yaiba survives quite the tumble.
Complete Mission 1.
Achieve a 200-hit streak.
Yaiba gets an armful.
Achieve a 100-hit streak.
Achieve a 50-hit streak.
Yaiba has a rude awakening.
Counter each enemy type.
Complete Arcade Mode.
Complete every Mission on Hard difficulty.
Complete every Mission on Nightmare difficulty.
Complete every Mission on Hell difficulty.