Here is the full list of all 8 Run'N'Get achievements.
Run more than 10,000 m.
Run more than 5,000 m.
Run more than 1,000 m.
Run more than 500 m.
Run more than 100 m.
Run more than 20,000 m.
Run more than 50,000 m.
Complete 'Nightmare' mode.