Here is the full list of all 39 YORG.io 3 achievements.
The first 50 zombies are the hardest.
You made it to day 5 - not bad for a start!
Time can be pretty short, not? You already played 15 minutes.
You placed your first 5 buildings - Great!
You reached level 5 - Thats a good starting point!
Enhance a building until level 25.
Kill 500 Zombies to unlock - not even hard?
Reach day 20 to unlock - This should be pretty doable.
Played for 1 hour.
You placed 50 buildings, getting used to it already?
Level 15 - congratulations!
Enhance a building until level 50.
Have 10 signal repeaters in one game.
Have 10.000 crystals in your crystal storage.
Have 10 solarpanels placed while playing on the desert map.
3500 Zombies so far. And there are more!
Day 100 - You defeated all zombies! Just kidding.
So far you wasted 5 hours of your time. Congrats!
Granted after you placed your 500th building.
Level 25 - yay!
Enhance a building until level 75.
Have one million crystals in your crystal storage.
Reach day 40 with no walls placed.
Place at least one of every building in a single game.
15,000 Zombies - how many are there?
Day 200 - Time for a break!
Congratulations, you spent a whole day playing YORG.io. You could have been so productive!
3,500 Buildings placed - wooha!
It's been a long way, but finally you are here - Level 50!
Enhance a building until level 100.
Have one billion crystals. Where you gonna spend them?
Have a building on every tile in the ice map.
Reach day 30 while only using cannons as a defensive tower.
Damn, that's a lot! You are hurting them!
Day 300 - really, you should see a doctor!
After you placed your 10,000th building, it's safe to say you know what you are doing.
Level 75, no one can beat you ... wait, what?
Enhance a building until level 125.
Have all other achievements unlocked. Wow!