Here is the full list of all 45 Countryballs: Modern Ballfare achievements.
Started playing with your balls like a champ!
Unlocked your first customisation item, go you! [Community Image By: Mr.Abdlerahman]
Killing an innocent ball :( [Community Image By: T-14 Armata]
Enter the Slavic Disco for the first time. [Community Image By: Mr.Abdlerahman]
Massacring innocent balls :'( [Community Image By: Mr.Abdlerahman]
Genocide of innocent balls :O [Community Image By: EAK]
Find the secret menu! If you can! [Community Image By: Mr.Abdlerahman]
Kill yourself with Ctrl + Z. [Community Image By: Mr.Abdlerahman]
Land the killing blow on the Pinata. [Community Image By: Mr.Abdlerahman]
Play with your balls 69 times. [Community Image By: Srebrny]
Hit other players with poop 5 times. [Community Image By: Mr.Abdlerahman]
Hit other players with poop 150 times! You dirty bugger! [Community Image By: PieSamuray]
Unlock 10 customisation items and impress your friends! [Community Image By: Srebrny]
Finish a PvP match without dying. [Community Image By: Srebrny]
Use the Discord button in the menu and connect with the community! [Community Image By: Dootzy]
Level-up your balls to XP rank -10. [Community Image By: Dootzy]
Play Balls From Hell with 4 players. [Community Image By: KingDarBoja]
Survive Wave 5 in Balls From Hell. [Community Image By: Srebrny]
Fall off the Rooftops to your doom! "Been spendin' most their lives livin' in the Rooftops Paradise" [Community Image By: Srebrny]
Aquire a lifetime total of 50,000 ShitCoins in Balls From Hell. [Community Image By: Alsacer]
Aquire a lifetime total of 100,000 ShitCoins in Balls From Hell. [Community Image By: Alsacer]
Survive Wave 10 in Balls From Hell. [Community Image By: Alsacer]
Survive Wave 20 in Balls From Hell. [Community Image By: alex006]
Upgrade A Weapon To Lava in Balls From Hell. [Community Image By: Dootzy]
Achieve XP rank -2. [Community Image By: Srebrny]
Kill 1000 total zomballs in Balls From Hell. [Community Image By: deb]
Kill 3000 total zomballs in Balls From Hell. [Community Image By: Srebrny]
Kill 300 total enemies in PvP. [Community Image By: Alsacer]
Kill 1000 total enemies in PvP. [Community Image By: mosambikyu]
Die and respawn using the Second Birthday Perk in Balls From Hell. [Community Image By: Sword_Head]
Get 1000 votes in one session. [Community Image By: mosambikyu]
Get disconnected from a session. [Community Image By: Oğuz]
Get to XP rank -5. [Community Image By: mosambikyu]
Get to XP rank -19. [Community Image By: Yugo]
Get to XP rank -35. [Community Image By: Edster]
Get to XP rank -69. [Community Image By: Dootzy]
Survive Wave 15 in Balls From Hell. [Community Image By: Srebrny]
Survive Wave 30 in Balls From Hell. [Community Image By: Sword_Head]
Survive Wave 40 in Balls From Hell. [Community Image By: Adem]
Die in Balls From Hell with 10,000 ShitCoins. [Community Image By: CopiluCuSarmale]
Upgrade a weapon to Gold in Balls From Hell. [Community Image By: Mr.Abdlerahman]
Complete a session of Political Negotiation. [Community Image By: Yugo]
Kill all members of the Slavic Disco. [Community Image By: Srebrny]
Be searching for a match for more than two minutes. [Community Image By: EpicGodYoshi]
Survive Wave 5 in Balls From Hell without personally killing any Zomballs. [Community Image By: Dootzy]