This is a really good game all round, and if you have the time. Really easy 1000gs, even on your first play through. You can earn between 600-700gs if you follow this guide.

Now to make it easier, you can plug in a 2nd controller, to get most of your achievements, but it is really not that important.

ACHIEVEMENT GUIDE

Helping Hand - 20 points

Revive 50 incapacitated Survivors.

Now this is really easy with a 2nd controller. Just start campaign on expert, shoot some friendly fire until your team mate goes down then simply revive him - easy as pie. 

Field Medic - 20 points

Heal 25 Survivors with a first aid kit.

Simply follow HELPING HAND achievement above except down your team mate, just heal him - you might have to reload campaign a few times, but takes about 10 mins. 

Pharm-assist - 20 points

Give pain pills to 10 Survivors.

Just follow above achievements except, with pills (this may be difficult because there are not many pain pills, when you find them, just reload checkpoint)

My Bodyguard - 15 points

Protect any Survivor from an attacking Infected 50 times.

This is so simple you will get this just playing through. 

Dead Stop - 10 points

Punch a Hunter as he is pouncing.

Just wait for a hunter to pounce, then press LT.

Cr0wnd - 30 points

Kill a Witch with a single headshot.

This is quite challenging because you have to get right up close, but only works with a shotgun. 

Untouchables - 30 points

No Survivors take damage after contacting the rescue vehicle.

This is quite tricky but look for the glitch at the end of my guide and you will see an easy way to do it (room glitch).

Drag and Drop - 20 points

Rescue a Survivor from a Smoker's tongue before he takes damage.

Quite easy. Just look out for smoker and shoot it just after it catches someone with its tongue.

Blind Luck - 20 points

You or another Survivor take no damage after being vomited on by a Boomer.

Just kill all the horde at one point but leave the boomer until the very end - there you go.

Akimbo Assassin - 30 points

Survive an entire campaign using only pistols.

Relatively easy, just let your team do all the work. 

Hero Closet - 10 points

Rescue a Survivor trapped in a closet.

Easy. Just release someone who has died from the closet.

Hunter Punter - 10 points

Shove a Hunter off of a pinned and helpless Survivor.

Easy. When a hunter has someone pinned down instead of shooting him, simply just melee him (LT)

Tongue Twister - 20 points

Free yourself from a Smoker who has grabbed you with his tongue.

This is only difficult if you don't know where the smoker is, but if you listen carefully, you can hear it laughing when you are near. Just try to be facing it when it catches you. Then baam,  shot.

No Smoking Section - 15 points

Kill 10 Smokers as they are pulling helpless Survivors.

Easy. Will get this as you play through.

101 Cremations - 20 points

Set 101 Infected on fire.

Pretty easy, just keep throwing Molotov's.

Do Not Disturb - 20 points

Sneak past all Witches in a campaign without disturbing one.

Not to difficult, just turn off your flash off and crouch easy!!!!!!!

Man vs Tank - 30 points

Single-handedly kill a Tank.

Good trick for this is on Death Toll, after you contact the rescue vehicle. Wait for the tank to come but it should get stuck on the side of the house. Then simply shoot till it drops

Tankbusters - 20 points

Kill a Tank without it dealing any damage to a Survivor.

Follow above achievement. 

Safety First - 30 points

Play an entire campaign with no Survivors taking friendly fire damage.

Hardest achievement I think. Just be careful.

Check this forum post by Roachanold for a tip to do this easy.

No-one Left Behind - 20 points

Beat a campaign with all 4 Survivors.

No one can die, so be very careful.

Unbreakable - 30 points

Finish a campaign without ever being healed.

Not as hard as you think. Just let your team mates do the job. This is a good one to go for when your trying not to alert witches.

Witch Hunter - 20 points

Kill a Witch without any Survivor taking damage from her.

You will get this when you kill a witch with a headshot.

Red Mist - 20 points

Kill 1000 Infected with a mounted machine gun.

There are at most points when you fight horde, a mounted machine gun. So just reload chapter. There you go.

Pyrotechnician - 20 points

Blow up 20 Infected in a single explosion.

Easy way, just grab pipe bomb then simply throw it.

Zombie Genocidest - 20 points

Kill 53,595 Infected.

What can I say, Dead Rising all over again. Just keep fighting the campaigns.

Dead Giveaway - 10 points

Heal a fellow Survivor when your own health is below 10.

Second controller. Just shoot yourself with 2nd controller then simply shoot 2nd player, then heal the 2nd player.

Stand Tall - 20 points

Survive a campaign without being incapacitated.

Easy just go for this when your trying not to alert witches and watch out for tanks.

Zombicidal Maniac - 30 points

Survive any campaign on Expert.

Have fun trying to do it legit. Or follow glitches at the end of guide and easy as pie.

What Are You Trying to Prove? - 35 points

Survive all campaigns on Expert.

Anyone gets this legit, private message me, I'll give you anything you want. FOLLOW GLITCH AT END OF GUIDE

Nothing Special - 30 points

Survive a campaign with no Survivors taking damage from Special Infected.

Only hard thing about this one is Hunters and Smokers. Just keep eyes out for tanks, Smokers, Hunters, Witches and Boomers.

Burn the Witch - 10 points

Light a Witch with a Molotov.

Easy. Just see a witch Molotov her ass.

Towering Inferno - 10 points

Light a Tank with a Molotov.

Same as above except with a tank.

Spinal Tap - 10 points

Kill an Infected with a single blow from behind.

Most easily done with Boomers. Just go behind an infected and press LT.

Stomach Upset - 20 points

All Survivors complete a campaign without being vomited on.

Easy. Just keep your eyes out for Boomers.

Brain Salad - 15 points

Make 100 headshot kills.

Just play through campaign and it will come.

Jump Shot - 20 points

Headshot a Hunter while he's leaping.

Not too hard. Just wait for a Hunter to pounce and aim for the head. Most easily done with a shotgun.

Mercy Killer - 15 points

Survive the No Mercy campaign.

Self- explanatory.

Back 2 Help - 20 points

Leave a safe room to save an incapped teammate and bring them back safely.

Use 2nd controller. Just down them outside a safe house, then revive easy.

Toll Collector - 15 points

Survive the Death Toll campaign.

You know what to do.

Dead Baron - 15 points

Survive the Dead Air campaign.

You know.

Grim Reaper - 15 points

Survive the Blood Harvest campaign.

Hardest campaign of them all to me.

Ground Cover - 30 points

Save another Survivor from a Special Infected while on the ground.

Most easily done with a smoker. Just get downed shot the smoker as he catches someone, or a hunter. Is pretty easy to do.

Clean Kill - 10 points

Shove a Boomer and then kill him without him splashing on anyone.

Easy. Just go up behind Boomer, melee it, then shoot.

Big Drag - 20 points

Drag a Survivor 100 feet with your tongue.

Hardest thing ever to do if your doing it legit, but get a friend to help. You must be online, just go in different teams and easy.

Chain Smoker - 20 points

Constrict two Survivors in one life as a Smoker.

Follow above except as a Smoker.

Barf Bagged - 20 points

Cover four Survivors with Boomer bile at once.

Same as above, except with four friends. 

Double Jump - 20 points

Pounce two different Survivors in one life as a Hunter.

Follow above except as a Hunter.

All 4 Dead - 30 points

Kill all four Survivors in one life while playing as a Tank.

Just wait until you become the Tank (picks randomly) then kill your friends.

Dead Wreckening - 20 points

Dole out 5000 total Survivor damage as a Special Infected.

Just keep playing online, it will come eventually.

Lamb 2 Slaughter - 20 points

As an Infected, incap a Survivor who has entered and left a safe room.

Just do it with your friends.

DASHBOARD GLITCH

Now the infamous dashboard glitch is back FOLLOW THESE STEPS

Update : Please note that this glitch has been updated to include the host getting the achievement. Read it here.

ALSO ON THE CAMPAIGN NO MERCY, AT THE END CHAPTER AFTER YOU CONTACT THE RESCUE VEHICLE THERE IS A ROOM WHERE YOUR NOT SUPPOSED TO GET IN, BUT I FOUND A WAY. VIDEO BELOW.

FOLLOW THIS GUIDE CAREFULLY YOU WILL GET MEGA POINTS.

IF YOU WANT HELP WITH ONLINE ACHIEVEMENTS MESSAGE ME:

GAMERTAG=ELITEPROSHOTNO1/DeFiNeNoAnGeLJr

There is also a guide in our forum in completing the last chapters on each level easy. READ IT HERE.

There is a guide for the Crash Course DLC HERE.