Here is the full list of all 11 Grind Zones achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Destroy 500 enemies
To collect 200 items
Kill 250 enemies
To lose a hundred times
To collect 50 items
Destroy 100 enemies
To collect 10 items
To lose 10 times
Get past the first location
Kill 20 enemies
Run the game