On level 2, "Apartment", when you go past your first tagging location, kill all policemen. There should be an apartment on the bottom floor, in the northern wing on the right. It is apartment number 15. Open the door and find the room behind the curtain. On the table in the corner is a high powered rifle for the taking.
Beatdown bonus level
Complete all 12 levels and mission objectives to unlock the Beatdown bonus level. The bonus level is fifteen waves with no reward.
Level bonuses
Level 1 "Warehouse"
Defeat 20 enemies: Flaming Beanie
Get to your car: Freeze's Starting Outfit
Take two Human Shields: 25 To Life Decals
Level 2 "Apartment"
Cover up 4 tags: Black Bandanna
Defeat 25 enemies: Barbed Wire Hat
Return to you car: Rick Ta Life Outfit
Level 3 "Downtown"
Break into ATMs (shoot them): Gold Earrings
Complete level without dying: White Sweatband
Defet 25 Enemies: Westside Knife Tat
Escape to your getaway car: Bank Robbing Outfit
Level 4 "Culdesac"
Achieve 20% Accuracy: Holster
Apprehend 5 felons: Kneepads (press Triangle to take out the Zapper, stun them, go up to them and press Circle to arrest)
Get the evidence to Mendoza's car: Officer Williams
Keep your partner alive: Tactical Vest
Level 5 "Club"
Achieve 25% Accuracy: Big Mustache
Apprehend 4 drug dealers: ATF Decals (dealers are the white people with green jerseys)
Get to the subway: DJ Envy Outfit
Register 8 Head Shots: Riot Helmet
Level 6 "Subway"
Achieve 30% Accuracy: Big Dawg Tat
Defeat 24 enemies: Sideburns
Free a cop: Full Tac Harness
Trap Shaun in subway train: Shaun's Getaway Outfit
Level 7 "Tijuana"
Defeat 60 enemies: Clock Cap Decal
Find Riggs at the club: Shaun's TJ Outfit
Tag over 4 gang tags: Mexican Flag Bandanna
Level 8 "Casino"
Defeat 45 enemies: Oozie Chest Tat
Escape with loot: Federates Outfit
Register 12 headshots: Scorpion Black Tat
Rob five cash carts: Triple Bracelets
Level 10 "Prison"
Defeat 30 enemies: No Parole Decal
Finish Level: Freeze's Prison Outfit
Protect Lazarus: Chinese Pain Tat
Level 11 "Mall"
Break into 5 ATMs: Black Gloves
Complete level without dying: Red Hightops
Finish level: Freeze's Mall Outfit
Level 12 "Hacienda"
Defeat 30 Enemies: G Cap Decal
Find 5 secret stashes: Bulldog Chain (in the Waterpool Courtyard there are two stashes in the vases. In front of the house on the right side in the yard is a stash in a vase. On the deck before entering is a vase with a stash. Before you fight Shaun there is a vase with a stash in front on the spiral staircase)
Kill Shaun: Daz and Tech N9ne
Tijuana: Defeating heavily armed enemies
On the Tijuana mission where you get the sniper rifle and the man says, "Now the Federales are after me!", you are confronted by a group of men with rifles. They will be on the rooftop directly across the courtyard from where you are standing. The following is an easy way to dispatch them. Step to back into the corner and look just above the shack with the red roof. You can just barely see the head of each sniper, but they cannot see you. Take them out one by one until there are none remaining. You will save a lot of ammo by doing this. Then, go through the courtyard and around the corner. You are now rushed by several enemies. Duck behind the rear of the police car and snipe the men in the head as they come around the corner. You will save even more ammunition by doing this. Around the next corner there are several more lambs to the slaughter. Duck behind cover before you go any further. Make some noise so that they will come around the corner exposing themselves. Snipe their heads. Note: One of them has a rocket launcher; take him out first if you get rushed.