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.
To lose a hundred times
Destroy 500 enemies
To collect 200 items
Kill 250 enemies
To lose 10 times
To collect 50 items
Destroy 100 enemies
Get past the first location
Kill 20 enemies
To collect 10 items
Run the game