Here is the full list of all 13 First Day: Home Defender achievements.
Accumulate $ 100,000
Build a Level 1 Wall
Build a Level 1 House
Build a level 5 wall
Build a Level 5 House
Build a level 10 wall
Build a level 10 house
Hold the defense for 33 days
Buy 10 weapons
Spend $ 1,000,000
Kill 1000 insects
Kill 10,000 zombies
Kill 100,000 enemies