Ok this page is going to help you get all achievements which are not story related or a collectable.
The first achievement is the most annoying due to the difficulty a couple of the activities have. For this achievement you need to complete all 10 levels of Taxi, Fire Truck, and Tow Truck. To start the activity just go into the vehicle and press Y when it tells you to.
The Taxi driving activity is probably the easiest. You get times to take passengers from point A to point B. Some passengers want you to drive fast and recklessly and others want you to drive slow and carefully. If you do not meet the requirements of the passenger they will just leave the taxi. However even though your time runs out you still have not failed as then the fare money you will receive will start to decrease so it gives you a little extra time, but this one is easy.
The Fire Truck activity can be frustrating but it is doable, it took me a few attempts to complete all 10 levels due to a few things. To start off, what you do in the activity is drive a fire truck to the marked location, go into the building and put out the fire with a fire extinguisher. This activity is all about speed, you need to do it fast as time is short and fires can spread. When traveling between locations make sure your siren is on to get rid of traffic, and when in buildings, watch out for people on fire as they run around like crazy and they can kill you by doing this (this has happened to me on level 9 before.) It might take a few attempts, but just practice and try to find a level area of the map so you do not need to worry about travelling uphill.
The Tow Truck is the hardest, and near impossible without a co-op partner. What you do in the activity is drive up to a vehicle and repossess it, just like in one of the first missions. Sounds simple, but after the first couple of levels you start taking vehicles which belong to gangs and the police, so you get people chasing you and trying to blow up your vehicle, and you can't repair throughout the activity. This is where your co-op partner comes in. As you start the level, get your co-op partner to start a race which cancels out all wanted levels, so you are free to kill the people protecting the vehicle and don't have to worry about people chasing you and trying to kill you.
Complete all levels of Tow Truck, Fire Truck, Ambulance, and Taxi diversions
This achievement requires you to get 3 gold stars on vehicle surfing. Jump onto the roof of a moving vehicle, and when it starts to speed up, it should ask for you to press Y and you will start to surf the vehicle. Then, just keep yourself balanced with the left stick. As soon as you get 3 stars achievement unlocked.
For this achievement you need to sing along to the radio, I use the male 1 voice which is the British voice. with this buy the Final Countdown song and put it on your radio, wait for the start of the song and boom, achievement unlocked.
Find that song that sings to you
Find a group of about 5 gang members, not your own gang of course, push left on the D-pad and you will taunt 5 people. They will start to attack you, run around until your notoriety is gone and then rinse and repeat, achievement unlocked. It is best to get this achievement before you have done all the main missions and Strongholds.
For the next achievement you need friendly fire to be ON. When you kill your co-op partner the partner killed will get an option to start a versus activity: it can be racing or a deathmatch type versus. Simply have your partner let you win, and then do it again for your partner and the achievement will unlock.
Defeat your partner in a co-op diversion
This next achievement requires you to have $500,000 cash. Go to the casino in Stilwater Boardwalk, in the Hotels and Marina district and go the poker machine. Place the max bet, then sit and gamble away your whole fortune until your achievement unlocks.
For this next achievement, you are going to have to rob innocent civilians, so grab a gun, click RS to zoom in and aim at a person, they will then hold up their hands and drop money. Repeat this 50 times for the achievement, however not all of them hold up their hands, some just run and others drop on the floor.
This achievement is for getting 100 nut shots throughout the game, very easy to do. Use whatever weapon you are comfortable with and shoot at the nuts, they will do an animation of being shot there, and it is best to do this achievement while playing through the campaign. Note: girls will do the animation for being shot but do not count, and neither do your gang members, or civilians. This has to be done on rival gangs members.
This achievement is for throwing someone a very long distance, now I personally did this doing the activity for crowd control and threw people into the environmental objects which worked for me, but another way is once you own a few penthouses find a tall one, grab a homie as a shield, and throw him off a roof.
This achievement is for taking 50 human shields. hold LB to grab people, and LB to throw them, rinse and repeat 50 times.
This next achievement is for doing the zombie uprising mini game. To access this, go to the the tv in a safe house and pick this game. Here is a fantastic guide by xiNRGix on YouTube showing you a really easy way to earn the achievement.
Once again all credit to xiNRGix for making the video.
This should be your last achievement. It is for playing the game a total of 50 hours, this can be combined between single and co-op play.
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