- Deus Ex reference
In Chapter 2: Freedom, the first line the black-marketer inside the labor camp will say is 'You want to talk to El Ray? That's cool!'. This is an exact statement made by a body guard for the Rook gang leader in the abandoned Brooklyn Bridge subway station in Deus Ex.

- Red Dawn reference
During the second or third mission where you first see the Korean camp for the Americans full of trailers and RVs, there is a sign that reads 'Go Wolverines'. This is a reference to the school's team in the movie Red Dawn. The story is written by John Milius, who co-wrote Apocalypse Now and wrote/directed Red Dawn, which depicts a resistant movement against a Soviet-led invasion of the United States.

- Trophies
Successfully complete one of the following tasks to get a trophy:

Bronze Trophies
Freedom	Finish chapter 2 in the Single Player Campaign.
Fire Sale	Finish chapter 3 in the Single Player Campaign.
Pistol Whipped	Kill 25 enemies with a pistol in Chapter 1
Iron Man - Why We Fight	Finish chapter 1 in the Single Player Campaign without dying or rebegining a checkpoint.
Iron Man - Heartland	Finish chapter 5 in the Single Player Campaign without dying or rebegining a checkpoint.
Weapon Expert	Finish an expert challenge for any weapon in Multiplayer.
Iron Man - Freedom	Finish chapter 2 in the Single Player Campaign without dying or rebegining a checkpoint.
Fire Sale - Guerrilla	Finish chapter 3 on the Hardest Difficulty in the Single Player Campaign.
Iron Man - The Wall	Finish chapter 4 in the Single Player Campaign without dying or rebegining a checkpoint.
Heartland - Guerrilla	Finish chapter 5 on the Hardest Difficulty in the Single Player Campaign.
Archivist	Find 30 of 61 News Pickups in the Single Player Campaign.
Medal of Honor	Be victorious in a public match as the Party Leader of a Party in Multiplayer.
Iron Man - Fire Sale	Finish chapter 3 in the Single Player Campaign without dying or rebegining a checkpoint.
Why We Fight	Finish chapter 1 in the Single Player Campaign.
Good Use of Cover	Destroy the first sentry without taking any damage in Chapter 2
Drone Expert	Finish an expert challenge for any drone in Multiplayer.
Mercy	Kill 5 enemies while they are on fire in Chapter 3
Vehicle Expert	Finish an expert challenge for any vehicle in Multiplayer.
The Wall - Guerrilla	Finish chapter 4 on the Hardest Difficulty in the Single Player Campaign.
Give Him the Stick	Kill 25 enemies with melee attacks in Chapter 1
Why We Fight - Guerrilla	Finish chapter 1 on the Hardest Difficulty in the Single Player Campaign.
The Wall	Finish chapter 4 in the Single Player Campaign.
Squad Commander	Enter a public match as the Party Leader of a 4-Player Minimum Party in Multiplayer.
Let 'em Burn	Don't kill any of the enemies that are on fire in Chapter 3
David Rejected	Finish the street section without Goliath taking any damage in Chapter 4
Heartland	Finish chapter 5 in the Single Player Campaign.
Speed Demon	Hijack the tankers in less than 8 minutes in one life in Chapter 6
Safer Skies	Destroy all the SAM trucks in the level in Chapter 6
Overwatch	Finish chapter 6 in the Single Player Campaign.
Bronze Welcome to Freedom	Talk at least once to each inhabitant of Oasis in Chapter 2
Stairway to Heaven	From the front door of the church, make it to the crowâ??s nest in 240 seconds in Chapter 5
Freedom - Guerrilla	Finish chapter 2 on the Hardest Difficulty in the Single Player Campaign.
Chronicler	Find the first of 61 news pickups.
Silver Trophies
Over the Hill	Reach experience level 50 in Multiplayer.
3-Star Threat	Become a 3-Star threat in a Battle Commander public match.
Overwatch - Guerrilla	Finish chapter 6 on the Hardest Difficulty in the Single Player Campaign.
Iron Man - Overwatch	Finish chapter 6 in the Single Player Campaign without dying or rebegining a checkpoint.
Full Boat	Enter a public match in a Party with 16 players in Multiplayer.
Gold Trophies
Expert Of War	Finish all challenges for weapons, drones, vehicles, and modes in Multiplayer.
Historian	Find all 61 News Pickups in the Single Player Campaign.
5-Star Threat	Become a 5-Star threat in a Battle Commander public match.
Platinum Trophies
Platinum Trophy	Finish all other trophies for Homefront.

Bronze Trophies
Wilhelm's Nightmare	Knock 10 enemies off of the scaffolding during the helicopter fly-in in Chapter 7
Soft Targets	Destroy all vehicles using the UAV in Chapter 7
Fatal and Tragic	Jump off the Golden Gate Bridge in Chapter 7
Silver Trophies
Golden Gate - Guerrilla	Finish chapter 7 on the Hardest Difficulty in the Single Player Campaign.
Iron Man - Golden Gate	Finish chapter 7 in the Single Player Campaign without dying or rebegining a checkpoint.
Golden Gate	Finish chapter 7 in the Single Player Campaign.

- QR code in Chapter 5: Heartland
In Chapter 5: Heartland, there is a QR code that appears during the mission. When captured with a phone with a QR reader, it will load the site at 'http://aug.me/SymB9t', which features wallpapers and videos from THQ.