- Easy 'Om Nom Nom!' achievement
In Act 4: Chapter 2, you will be introduced to the plants that eat whatever is thrown at them. You are also introduced to the plants that have greenish spores and latch onto enemies. Leash a Nom Parasite, and then kick it into a flytrap to get the 'Om Nom Nom!' achievement.

- Alternate leash color
Successfully complete the Bulletstorm demo to unlock the emerald leash color in Anarchy mode.

- All Skillshots
Successfully complete the indicated task to perform the corresponding Skillshot. There are a total of 131 Skillshots.


General I

Antidote	Kill an enemy who is infected by the Puffball Gas.
Killer news	Kill someone with the explosion of a Newsbot.
FastFood	Ram an enemy to death with a hot dog cart.
Voodoo Doll	Kill an enemy by flinging them into a sharp object.
Pricked	Kill an enemy by flinging them into a cactus.
Vertigo	Send an enemy down a huge drop.
Toxic Love	Kill an enemy while infected by Puffball Gas.
ScareCrow	Put a Nom Parasite on an enemy's head, then impale them.
EnviroMental	Kill one or more enemies using an enviromental explosive.
Graffiti	Kill an enemy by kicking him against a surface.
Nominated	Kill an enemy with a Nom Parasite on their head.
Heads Up	Put a Nom Parasite on an enemy's head, then take their head off.
Leak	Put a Nom Parasite on an enemy's head, then headshot them.
Bad Digestion	Cause a Flytrap to swallow something explosive.
Sausage Fest	Kill an enemy using a hot dog cart explosion.
Exterminator	Kill an entire swarm of Electro Flies.
Afterburner	Kill an enemy who is on fire.
Shocker	Kill an enemy by flinging him into an electrical source.
Feeder	Feed an enemy to a Flytrap.
Fly Guy	Kill an enemy by flinging them into a swarm of electro flies.
Intoxicated	Kill an enemy while drunk on Nom Juice.

General II

Friendly Fire	Kill an enemy by flinging them into the fire of another enemy.
Full Throttle	Use bullets to kill two or more enemies without letting go of the trigger.
Parashoot	Leash an enemy out of a gyrocopter and kill him before he lands.
Fertilizer	Explode two or more thumped enemies using an enviromental explosive.
Fly Swatter	Thump an enemy so he smashes into the ceiling or an impaler.
Touchdown	Thump a stunned mini-Boss to his death.
Bombshell	Kill two or more enemies from an exploding Flailbomber.
Blind Fire	Kill an enemy while blinded by a flare.
Kick Off	Remove a mini-Boss's helmet, then when he is stunned again, kick his head off.
Slam Dunk	Smash an airborne enemy into the ground using the Thumper.
AssPlosion	Kill a burnout by shooting his ass growth.
SkyJack	Kill a gyrocopter pilot while the vehicle is airborne.
Discharged	Kill a Heavy Echo trooper with a charged PMC when he is charging his.
Stomach Pump	Kill a mini-Boss by firing a charged drill into his stomach and then kicking it.
Flak	Destroy a gyrocopter using a indirect explosion.
Gotcha!	Leash a Creep or Skull Flaregunner and kill them in mid-air.
Fire In The Hole	When a mini-Boss is stunned, kick him from behind, then shoot him in the butt.
Trap Shooting	Use bullets to kill a Thumped enemy.
Whiplash	Remove a mini-Boss's helmet, then when he is stunned again, leash his head off.
Bossed	Kill a mini-Boss.
First In Last Out	Get an enemy airborne, kill a different enemy, then kill the first before he lands.

PeaceMaker Carbine

Overkill	While charged, execute a headshot with the Charge Shot.
Mercy	Shoot an enemy in the balls and kick or shoot his head off.
Gag Reflex	Kill an enemy with a shot to the throat.
Bullet Kick	Kick an enemy and shoot him to death in mid-air.
Trip Wire	Shoot a running enemy in the legs to trio him, then finish him off before he gets up.
Rear Entry	Kill an enemy by shooting him in the ass.
Boned	While charged, kill an enemy within a moment of getting them in your sights.
Headshot	Kill an enemy with a headshot.
Bullet Slide	Slide into an enemy and shoot him to death in mid-air.
X-Ray	While charged, kill two or more enemies with a single Charge Shot.

Screamer

FireWorks	While charged, explode an enemy who is 20 meters or higher in the air.
Misfire	While charged, flare an enemy but kill him before it explodes.
SnapShot	Kill an airborne enemy the moment you have them in your sights.
Surgeon	Kill an enemy by shooting only one single limb repeatedly.
Enlightenment	While charged, shoot an enemy in the head with a flare and let it explode.
GunSlinger	Realize two or more FAST DRAWs or SNAPSHOTs sequentially.
Fireball	While charged, shoot an enemy with a flare so it explodes and kills another enemy.
One Hit Wonder	Peform a clean execution by using only a single bullet to kill the enemy.
Fast Draw	Kill an enemy the moment you have them in your sights.
FireFighter	While charged, ignite three or more enemies and kill them while they burn.

FlailGun

Chain Reaction	While charged, slice two or more enemies in half using a flail Charge Shot.
Homie Missile	Use a flail-wrapped airborne enemy to kill another enemy.
Sadist	Wrap a flail around an enemy but kill him before it explodes.
Gang Bang	Kill two or more enemies with a single flail explosion.
Head Slicer	Decapitate an enemy after wrapping the flail around an object.
Meat Slicer	Slice an enemy in half while wrapping the flail around an object.
Smart Mine	Use a flail-wrapped standing enemy to kill an airborne enemy.
Grenade Gag	Wrap a flail around the head of an enemy and explode it.
MineField	Kill an enemy by exploding a flail attached to a surface.
French Revolution	While charged, decapitate two or more enemies with a flail Charge Shot.

BoneDuster

Burn	While charged, vaporize two or more enemies with a single Charge Shot
Juggler	Blast an airborne enemy twice, then kill him before or on landing.
Pump Action	Get an enemy airborne, then shotgun blast him into an enviromental hazard.
Legless	Blow the legs off an enemy.
PileDriver	Get an enemy airborne, then smash him into a surface with the shotgun blast.
Torpedo	Kill an enemy by shooting him while sliding.
Slugfest	Kill two or more enemies with one standard shot.
Topless	Blast away the top half of an enemy.
SplatterPunk	Kill a downed enemy by blasting him against the floor.
Acid Rain	While charged, vaporize two or more enemies in mid-air.

Head Hunter

Shrapnel	While charged, explode two or more airborne enemies using a single bullet.
Premature	While charged, explode the bullet to kill the target before it hits him.
Bluff	Kill an enemy who is not actually the chosen target of the bullet.
Broken Be victorious ings	Kill a thumped enemy with a guided bullet.
HotShot	Kill a dodging enemy by targeting a weak spot like the head or throat.
Nut Cracker	Kill an enemy by guiding a bullet into his balls.
Letter Bomb	While charged, explode two or more enemies using a single bullet.
Show Off	Kill an enemy from 10 meters without using the scope.
Accident	Shoot an enemy and have him die from hitting an enviromental hazard.
Early Retirement	While charged, kill an enemy controlled with the charged bullet before it explodes.

Bouncer

Kick of Doom	While charged, kill an enemy by kicking a cannonball.
Lucky Shot	Kill an enemy with a cannonball that travelled over 100 metres without bouncing.
Carpet Bombing	Bounce a cannonball at least two times before killing an enemy with it
Money Shot	Kill an enemy by launching a ball at them and exploding it before it hits anything.
Trick Shot	Kill an enemy with a cannonball bounced off a wall or obstacle.
Bully	Detonate a cannonball to kill an enemy just after knocking them over with it.
Meat Fountain	Kill two or more airborne enemies with one cannonball.
Direct Hit	Kill an enemy with a direct hit from the cannonball.
Boom	Kill two or more enemies with one cannonball.
Sledgehammer	While charged, kill three or more enemies with one charged cannonball.

Penetrator

Stringer	While charged, suspend a drilled enemy mid-air, then kick him into another enemy.
Shishkebab	Impale two or more enemies with a single drill.
Twisted	Fire a drill into an enemy but have him die by other means.
Fan-Tastic	Drill an enemy into the ceiling.
Air Strike	Impale a thumped enemy into a standing enemy.
Mile High Club	Send an enemy into the sky.
Be victorious ingmen	Impale two or more airborne enemies with a single drill.
Breakdance	Drill an enemy into the ground.
Root Canal	Inset a drill into an enemy's head.
Drilldo	While charged, ram two or more enemies during a slide with the charged weapon.

Secret

Ding Dong	In Act 4
Grilled Meat	In Act 6
Outburst	In Act 6
Kill Chapter O Chapter Watt	In Act 2
Fish Food	In Act 3
Pancake	In Act 1
Mass Extinction	In Act 2
Steady Hand	In Act 5
Grinder	In Act 3
Sucker	In Act 2
Tenderizer	In Act 4
Dino Chapter Sore	In Act 5
Minced Meat	In Act 5
Weed Killer	In Act 4
Forced	In Act 6
Man Toast	In Act 3
Halloween	In Act 4
Floater	In Act 3
Ejaculated	In Act 7

Online

Nom Nom Nom	Feed an enemy to the dinosaur skull on the Dead Rock level.
Best Friends	Impale three or more enemies with a single drill.
Barrels Of Fun	Use a flying barrel to kill an enemy a teammate has made airborne.
Yoink	Leash and kill an enemy a teammate has kicked or slid into.
Heat Wave	While charged, two players use a PMC Charge Shot on an enemy at the same time (mini-Bosses only).
Double Penetration	Killed an enemy with help from a teammate.
Blood Bath	Toss an enemy into the Juicer on the Turbine level.
Das Boot	One player kicks an enemy and another player kills them with a kick.
Ground Chuck	Fling an enemy into the Grinder on the Power Plant level.
Blood Fountain	Push an enemy into the river on the Waterworks level.
Fail	Failed to complete a Blue Godbeam challenge.
Man Crush	Crush an enemy with the Smasher on the Junkyard level.
Tug-O-War	Tear apart an enemy with two Leashes.
Royal Flush	Flush an enemy down the water tubes on the Waterworks level
Meatspin	Propel an enemy into the revolving door on the Grand Central level.
Alley Oop	Finish an enemy off with a kick that another player has leashed.
Burninating	Kill an enemy with a charged shotgun shot.
Flattery	Flatten an enemy with the elevators in the Grand Central level.
Not In Kansas	Fling an enemy into the tornado on the Dead Rock level.
Kaboom	Kill three or more enemies with one cannonball.
Meat Waterfall	Kill three or more airborne enemies with one cannonball.
Make A Wish	Electrocute an enemy to death in the fountain on the Grand Central level.
Savior	Kill an enemy who is at close range attacking a teammate.
Fish Chow	Send an enemy into the waterfall on the Junkyard level.
Midnight Express	Kill an enemy by flinging them in the monorail's path on the Grand Central level.
Adrenaline Rush	Have two teammates kill an enemy by kicking him into a surface.

- Xbox 360 reference
After the opening sequence at the very first area on the ship, a door will malfunction with a semi-circular flashing red light. After a crewmate tries to fix it, three red lights will appear in a ring around a dot. This is the same error status of the Xbox 360's 'red ring of death'.

- Achievements
Do the following things to obtain the corresponding Gamerscore points:

5 Points
Like A Boss	Overcome a miniboss in Anarchy mode.
10 Points
Insecticide	Destroy 50% of the Electroflies in the Single Player Campaign.
Remembrance	Play three different Echoes.
Pointless	Execute at least 10 Headshots before you find the first DropKit.
Disco Inferno	Kill all enemies without leaving the dance floor in the city outskirts.
Om Nom Nom!	Feed a flytrap with a Nom parasite.
Wannabe	Perform 10 different Single Player Skillshots.
Major Malfunction	Destroy 50% of the Newsbots in the Single Player Campaign.
Team Player	Finish 200 team challenges in your career in Anarchy mode.
Guerrilla Tactics	Execute at least 25 different Skillshots in one Echo round.
Shooting Star	Get at least 1 star on each of the first 14 Echoes.
Red Barrels	Explode all the red barrels on the rooftop while in a helicopter.
Straight Edge	Destroy at least 20 bottles of Nom Juice in the Single Player Campaign.
Space Pirate	Drink at least 20 bottles of Nom Juice in the Single Player Campaign.
Star struck	Get 3 Stars on 10 different Echoes.
15 Points
Fits Like a Glove	Meet your new best friend.
Grilled Meat	Prepare a big meal using an improvised electric stove.
Patched Up	Receive a software update for your leash.
Armed and dangerous	Grow as a person, experience betrayal. Again..
Damsel in Distress	Rescue the princess.
Old School	Finish an Echo round without executing a single Skillshot.
Halfway There	Get at least 21 stars in Echoes Mode.
Size Matters	Use your biggest weapon.
Minced Meat	Take out the Mall's biggest customer.
Destroyer of Worlds	Cause major destruction.
All Bow To Heavy Metal	Big head, big headache.
Weed Killer	Tidy up the back yard.
Stowaway	Catch a ride.
20 Points
Pest Control	Destroy all Electroflies in the Single Player Campaign.
Enforcer	Get at least 15,000 points in one Echo round.
Destructive Clear	Finish the Campaign on Very Easy or Easy Difficulty.
Somebody	Perform 25% of the Single Player Skillshots.
Environment Master	Perform every Anarchy environmental Skillshot.
I might be late	Kill all enemies during the sprint to the jumpship.
Total Malfunction	Destroy all Newsbots in the Single Player Campaign.
No Man Left Behind	Kill all enemies while escaping from the collapsed building.
Just one last thing	Kill all enemies before you reach the escape capsule.
Bounty Hunter	Have a total of at least 75,000 points in Echoes Mode's total high score.
30 Points
Violent Melody	Finish the Campaign on Normal Difficulty.
Chop-Chopper	Kill the enemy inside the airborne helicopter in the park.
Anarchy Master	Achieve a score of at least 50,000 as a team in Anarchy mode.
Big Cheese	Perform 50% of the Single Player Skillshots.
40 Points
Supernova	Get 3 stars on each of the first 14 Echoes.
Celebrity	Perform 75% of the Single Player Skillshots.
Master of Disaster	Gain 2000 points or more at once.
Brutal Chorus	Finish the Campaign on Hard Difficulty.
Final Echo	Achieve level 65 in Anarchy mode.
Hoarder	Have a total of at least 150,000 points in Echoes Mode's total high score.
50 Points
Blood Symphony	Finish the Campaign on Very Hard Difficulty.
Golden Idol	Perform every Single Player Skillshot in the game.

10 Points
Bell End	Kill 5 enemies at the same time using 'Dung' in the Villa map.
20 Points
Extinguisher	In the Sewer map, kill 5 enemies in one wave by setting them on fire then extinguishing them.
25 Points
Hell Razor	Kill a Burnout using the helicopter that arrives in Crash Site.
30 Points
Last Blood	At the end of Guns of Stygia, kill all the enemies on the walkways before the explosions do.
40 Points
Heart Attack	Kill a Boss using the Hot Dog cart in the Hotel Elysium map.

10 Points
Barber	Kill an enemy by thumping them into a helicopter in the Mini City map.
20 Points
Up-Lifting	On Monorail Factory, kill all enemies whilst riding the lift.
25 Points
Fast Track	On Mean Street, kill all the snipers on the rooftop before the DNA bomb explodes.
30 Points
Environmentalist	In the Rock Quarry map kill an enemy using a Mine Cart, Oven, Fan, Smasher and Lava Cart in one wave.
40 Points
Clear 'em down	Kill every enemy in a wave using only the Teleportation in the Ulysses map.

- Easy 'No Man Left Behind' achievement
In Act 4: Chapter 3, the building you are in will begin falling apart and a 30 second timer will appear at the top of the screen. You must follow the path made for you by falling debris, and kill the two enemies in this area to get the 'No Man Left Behind' achievement.