Here is the full list of all 60 Park Rangers of The Undead achievements.
Beat Arena Wave 1 (Forest)
Beat Arena Wave 2 (Forest)
Beat Arena Wave 3 (Forest)
Beat Arena Wave 4 (Forest)
Beat Arena Wave 5 (Forest)
Beat Arena Wave 6 (Forest)
Beat Arena Wave 7 (Forest)
Beat Arena Wave 8 (Forest)
Beat Arena Wave 9 (Forest)
Beat Arena Wave 10 (Forest)
Beat Arena Wave 11 (Forest)
Beat Arena Wave 12 (Forest)
Beat Arena Wave 13 (Forest)
Beat Arena Wave 14 (Forest)
Beat Arena Wave 15 (Forest)
Beat Arena Wave 1 (Desert)
Beat Arena Wave 2 (Desert)
Beat Arena Wave 3 (Desert)
Beat Arena Wave 4 (Desert)
Beat Arena Wave 5 (Desert)
Beat Arena Wave 6 (Desert)
Beat Arena Wave 7 (Desert)
Beat Arena Wave 8 (Desert)
Beat Arena Wave 9 (Desert)
Beat Arena Wave 10 (Desert)
Beat Arena Wave 11 (Desert)
Beat Arena Wave 12 (Desert)
Beat Arena Wave 13 (Desert)
Beat Arena Wave 14 (Desert)
Beat Arena Wave 15 (Desert)
Slay 250 Dum Dum Zombies
Slay 500 Dum Dum Zombies
Slay 1000 Dum Dum Zombies
Slay 250 Heavy Zombies
Slay 500 Heavy Zombies
Slay 1000 Heavy Zombies
Slay 250 Rat Zombies
Slay 500 Rat Zombies
Slay 1000 Rat Zombies
Slay 100 Medic Zombies
Slay 250 Medic Zombies
Slay 500 Medic Zombies
Slay 100 Soldier Zombies
Slay 250 Soldier Zombies
Slay 500 Soldier Zombies
Slay 50 Chicken Zombies
Slay 100 Chicken Zombies
Slay 150 Chicken Zombies
Slay 25 Glutton Zombies
Slay 50 Glutton Zombies
Slay 100 Glutton Zombies
Slay the Big Bad boss
Slay the Tank Zombie boss
Slay the Gunner boss
Slay the secret boss
Earn $100.000
Earn $1.000.000
Earn $10.000.000
Complete the Training Course.
Complete the Training Course with a perfect score in 40 seconds or less.