Sunset Overdrive

To gain a higher amount of chaos points in this mode you must select the mini game with the highest % increase on each vote section.

The top statistic is chaos points based and the bottom statistic is a bonus which has no effect on chaos points accumulated.

You must also complete the night defence section at the end to unlock the achievement. Just before the final battle you see how many chaos points the team collected.

The first part of the job consists in getting the said percentage of Chaos from the sum of the minigames BEFORE the final battle (the Defend the Vats last stand doesn't add more Chaos to the count).

Here's the list of minigames I recommend picking and the ones I recommend avoiding when voting:

Wrecking balls - this is a good minigame to give everybody a chance to earn the bonus multipliers in the post game spin screen. Nobody is competing with nobody, except themselves. One bonus objective is to kill 20 enemies, the other to kill 40 of them.

Vending Vandalism - a nice game but one that requires excellent teamwork in order to complete it under 2 minutes. The first set of 9 machines spawn right where you are and everybody will probably take part in their destruction. As soon as the "Go to the next area" warning appears, instead of going towards it, if you're already used to this minigame and map, go to the third spot instead (it won't be marked on your screen so you need to know how to get there, which is easy, pretty much just follow the road hugging the invisible wall). Then, right after your teammates finish cleaning up the second one, the final 9 soda machines will appear and you can start destroying them, without awaiting for the rest of your squad. That's how you complete it efficiently in under 2 minutes.

Day of the OD - of all minigames, this is the one that I haven't played many times at all. So, no good tips here.

Fizzco Ambush - THE BEST mission in my opinion. Should be selected every time it appears in the voting screen. As soon as the game starts, pull out your Hair Spray Bomb (preferably equipped with the Second Amendment amp), jump forward and move down the road shooting everything until you don't see any red dots on your radar anymore. Keep bouncing on cars for extra points. Then start going back for that's where the next robot enemies will appear. Again, keep jumping on a car. When you get good on this mission, using the mentioned weapons, you'll get the most kills in it everytime. All in all, it's a short mission with lots of explosions and quick points.

Defend the Hospital - My tactic here is to stay away from your teammates from the beggining. As soon as the game starts, go South (check map) towards that big blueish building that looks like an underbridge. Stop between the numbers 4350 (on the right) and 4020 (on your back, on the left). From where you are, enemies will spawn in a few seconds, coming from 3 different doors. You can set up Acid Sprinklers and Turret Copters, besides shooting with your Hair Spray gun. Keep bouncing on the top of a car for extra points. It's guarantee that the biggest score and number of kills at the end of the round will be yours.

The Floor Is Lava - 1st golden hint: instead of rushing to the start point where everbody spawns, stay BY the Vat above the lava part (coming from the starting point of the mission, the first Vat to the right). That way when the mission starts, you'll be ahead of the others and really close to the first "pushie" doll. 2nd: after delivering the first doll, go back using the same upper way that you came from instead of jumping down and trying to slide through the lava like most people do. Keep doing that until you've collected as many as you can (I've collected all 6 a few times that way). Also, pay attention to your radar, it will show the locations of the dolls. Sometimes a couple of them spawn in a very safe area, away from the lava and close to the delivering point.

Scrambler... something - NEVER choose these "collect the numbers" kinda mission. They are one of the easiest to fail, no matter how hard or excellent one team member performs.

Fizzco HQ (a.k.a. "destroy the boxes") - In time I started hating this mission, for I was divided between finding and destroying 10 jedi robots for the bonus objective or focusing on destroying as many boxes as I could. Truth be told, it's hard to find more than 5 blue sword robots, left alone be able to kill them undisputed. Depending on the other option at the voting screen, I'd pass on this minigame.

Urban Jungle Gym IV - The least generous minigame to choose from. Only 1 player will get both bonuses for its objectives. After I grew a conscience, I stopped picking this game when I had a better option to vote.

If the tips mentioned on this solution help you in any way, please give it a thumbs up to let me know. Thanks!

Doing Chaos Squad with 2 people.

Nobody is playing this game now, and I am too lazy to go find a group. Me and a friend decided to tackle all Chaos Squad as two people and we have been successful. You have to set your Chaos Squad to private, invite the second person and then search. After a few moments it will put just you two into a game.

With only two people you have to be at the top of your game. You both will need all of your guns at level 5, and your other amps as maxed as you can make them.

The Guns we used were:
Hairspray Bomb w/ Second Amendment
Acid Sprinkler w/ Winter is Coming
Taunt Bot
Pulse Mine
Rager (Rager is better than Plague Bomb because Rage stops them from attacking the Vat. Plague does not.)
Swarming Nanobots
Freeze Bomb
Shield Buddy

You can use whatever amps you feel like, I never noticed too big of a difference except with freeze in the Acid Sprinkler. That is a must and will save your life.

For the personal Overdrives I would use OD Killer, OD Rival, OD Less Damage, Health upgrade, Deployable Ammo, and Single Shot Ammo. Damage on your guns is not terribly important because things are going to die anyway, you need sustained survivability and enough ammo to get through.

Always vote for the highest Chaos Squad in each mission. Generally if you vote that way you will reach the Chaos Squad goal. No matter what avoid Scavenger Scramble. The points one is unwinnable with two people. You really want the game to give you more Vat Capacity but you don't really have a lot of control over that.

The Night Defense has 5 waves. The first 4 waves have set waves of enemies. Once you defeat all the enemies the wave ends. The 5th wave is times. There is still a set number of enemies but it does not end until the timer is up. Even if you kill all the OD you can still lose if you get killed by Wingers. Speaking of Wingers, ignore them. Wingers, Herkers, and any other special OD. They will not attack the vat, so they do not matter. They will attack walls and traps, but the only thing that matters is killing the normal OD. This does make things difficult in later waves when there are a ton of Wingers around ruining your ability to grind, but you have to adapt and endure. With two people you can't focus on killing wingers and OD, and you gotta kill OD.

For each Night Defense I would put an Acid Sprinkler, Taunt Bot, and Pulse Mine in front of the gate. Then I would use Hairspray Bomb to attack. In the later waves when there is just too much going on I would focus on whats around the vat using Rage on large groups of OD. Acid Sprinklers around the Vat is a life saver.

For Traps I generally only used Senior Freeze. I would put them around the vat or in the path of the OD if the OD always followed a set path. Once there are a ton of Herkers and Wingers the traps get destroyed too fast. I would just put down a machine gun turret to help.

Harbor District Specific

All of the missions are doable with 2 people. The only one to really avoid is Scavenger Scramble (as always).

Try and avoid Fizzie Attacks, but he is pretty easy if you have to take on the challenge. Grind on the wire out on the water until the 2 sets of platforms rise out of the water. One person jumps on the left side while the other jumps on the right. Once he is stunned shoot him in the eyes. Robots will spawn after about two rounds of shooting Fizzie. Take them out. The second form will have Fizzie open his mouth to release balloons. The balloons will damage you but you can either shoot them, ignore them, or use Shield Buddy. After a few more rounds another wave of Robots will appear. They are not terribly dangerous, more of a way to refill ammo. Eventually, after enough damage a disco ball will appear on Fizzie's forehead. You will know you can attack it when you are able to highlight the disco ball when you hold LT. At that point put everything you have into the disco ball to end the fight.

For Hold the Bridge switch to using the Fizzco Rifle if you have it. Use Taunt Bots and change your Amp to Grind the Lightning. This makes you shoot out lightning when you grind. Just grind up and down the middle rail to obliterate the Robots.

Night Defense

This is a pretty hectic one, but its not hard. There are two vats. They are right next to each other, one on an upper platform and one below it. They each have ramps and gates that lead to them. There are a lot of gates. Luckily the vats are right next to each other so they are easy to defend.

Unfortunately with all of the gates it is very hard to pick one to defend because the OD will come from every direction. The front, the right side, the back. You both will need to stay near the vats and obliterate all the enemies that come near. Every so often you need to be checking the back area for stragglers so they do not sneak through. In the early waves you can go further out from the vats to attack the OD coming in, but by the time you get to wave 4 or 5 you will need to stay near the vats. Luckily they will funnel very close together. Using a lot of deployables around the boat will bring you together.