Here is the full list of all 27 Last Hope - there are Tower Defense achievements.
The reign of terror might be finally over!
Kill the dark hooded creature you've been hunting.
We've been looking everywhere for this!
Don't trust anyone who's acting too friendly.
End the reign of the Raider boss who attacked the camp.
Turn up the watts and fry the zombie brain circuits!
If you've gotten poisoned, our medicine man can help you.
Who is in need of both firepower and healing?
Let the justice decide the fate of the zombies.
Equipped with homemade armor, mines and shoguns.
A lot of airplanes but no one to fly them.
You are the toughest zombie fighter out there!
He is not only capable of acting in the shadows.
If a small turret won't work, try a big one!
Take out a target from far away, making them head pop!
Take control over the highway and get rid of the maggot puking trucker.
Force the Witch leave her crypt.
Gear up! No good can come by following this road.
Take down the great white vulture roaming the sky.
It's now safe to take a swim and clean yourself up.
Help the Chieftain to safely return to the village.
Grandma and Grandpa, strike those zombies!
Bow before me zombies as I make the earth crumble.
Slay the evil zombie gorilla attacking the village.
He is tall, handsome and ready to rock & roll!
The Stone spirit has been summoned!
Become the savior of the wasteland.