Here is the full list of all 12 Crystal Quest Classic achievements.
Complete wave 40
Score 10,000,000 points
Collect 30 bonus crystals
Have 30 smart bombs in hand
1,000,000 points on first life
Have 30 lives in hand
Complete first wave in 5 seconds
Avoid mines for 20 straight levels
Score 1,000,000 points
1,000,000 points with no smart bombs
Score 10,000 points
Destroy 30 nasties with 1 smart bomb