Do the following on the default settings to get more points:
Dodge: Survive Wave 1 for 28 seconds without dying
Glue: Successfully complete Wave 1 without moving or dying
High Score: Get first place on the game score board
Save All Humans!: Save all humans on Waves 1 and 2
Time Challenge: Reach Wave 4 in under 45 seconds
Wave 5: Reach Wave 5
Wave 10: Reach Wave 10
Wave 30: Reach Wave 30
Wave 100: Reach Wave 100