Defeated 500 of these zombies in one run
Unlock the AC4400 Class of Locomotive
Unlock the special Air Strike pallet
Rescued 15 Survivors in a single run.
Health regeneration upgraded to maximum
Defeated 80 of these zombies in one run
Defeated 30 of these zombies in one run
Unlock the Bouncy Wrecking Ball pallet. Hit the ball with your mouse cursor and see it smash those zombies!
Defeated 300 of these zombies in one run
Upgraded Bunker to have second shotgun
Win any stage with the AC4400
Win any stage with the Classic Steam Locomotive
Win any stage with the Class 43 HST
Win any stage with the Diesel Electric Locomotive
Win any stage with the Gronk Shunter
Win any stage with the Milwaukee Road Class A
You survived for 35 minutes in Forest of the Dead!
You survived for 35 minutes in City of the Dead!
You survived for 35 minutes in Tunnel of the Dead!
Unlock the Class 43 HST Locomotive
Unlock the Critical Strike pallet. All damage multiplied 3x for a limited duration.
Locomotive upgraded to have max crushing damage
Collect ten diesel pallets in a single run
Combat drone unlocked
Unlock the special EXP Magnet pallet
Defeated 100 of these zombies in one run
Locomotive can have up to five weapons
Collect ten gold pallets in a single run
Unlock the "Gronk" Shunting Locomotive
Collect ten upgrade pallets in a single run
You survived for 35 minutes in City of the Dead on Hard Mode!
You survived for 35 minutes in Forest of the Dead on Hard Mode!
You survived for 35 minutes in Tunnel of the Dead on Hard Mode!
You completed City of the Dead in hard mode!
You completed Forest of the Dead in hard mode!
You completed Tunnel of the Dead in hard mode!
You reached level 100!
Locomotive upgraded to max acceleration
Air strike duration upgraded to maximum
Critical strike duration upgraded to maximum
EXP Magnet duration upgraded to maximum
Locomotive health upgraded to maximum
Orbital Strike duration upgraded to maximum
Additional weapon damage upgraded to maximum
Bouncy wrecking ball duration upgraded to max
Double gold earned on every pallet
Defeated 20 of these zombies in one run
Unlock the MWH Steam Locomotive
Max amount of exp gained from every exp node
Unlock Orbital Strike by accomplishing achievements. Unleash heavy damage on the zombie horde!
Pallets move at maximum speed
Defeated 450 of these zombies in one run
Upgrade to have the maximum initial upgrade points
Unlocked Shockwave by accomplishing achievements. Effortly shove aside zombies including bosses.
Shockwave duration upgraded to maximum
Defeated 120 of these zombies in one run
Complete the City of the Dead stage in less than 10 minutes
Complete the Forest of the Dead stage in less than 10 minutes
Complete the Tunnel of the Dead stage in less than 10 minutes
Unlock the Steam Locomotive
Collect ten special pallets in one run
Defeated 200 of these zombies in one run
Locomotive can drive up to 10m/s
Collect ten steel (health) pallets in a single run
