In the third mission of the game you will need to escort two Wolverine mobile artillery vehicles to a designated location. This task is actually quite easy, as long as you clear the area ahead of the Wolverines and then backtrack to cover them.
What I did was rush from the start point until you reach an area that has a fork, with one path going cliffside on the left and a wide open area on the right. Tons of enemies will come from both sides here, so make sure you kill all of them before you progress. Keep a medium pace up the right path once you’re clear and you’ll soon start hearing that the Wolverines are under fire. If you don’t have the Tunderstorm skull equipped (I used Hollow and famine) they will be fine for the time being. Keep clearing until you reach a dead end with some grenades and ammo, then backtrack to the rear of the farthest Wolverine, as he will have a number of enemies following him at this point. Once the Wolverines have reached the destination, there will be one last dropship near the edge of the cliff at the farthest point in the map. After clearing the ship’s enemies, you’ll be done.
If you’re having any trouble, you could try using the sniper rifle, which costs 1,000 XP for this mission alone. It will clear entire lines of enemies in one shot, so be sure to line up your targets to maximize your points and ammo useage.
This will be the first mission you encounter Jackals (shield wielding enemies on). Overall, taking them down is pretty straight forward – either use grenades or rush them from the front/ side to melee their shield down then kill them, or just blast them twice with the shotgun. There are about a dozen teams of two scattered throughout the map, and the most frustrating part about this achievement is that your teammates might knock the shield of an offscreen Jackal down and it will come back up before you even realize what happened. Thus you want to try and keep pace so your teammates are always moving and don’t get distracted, and when you take down a Jackal’s shield, make sure you chase him down (they’ll run away) to finish him off.
Alternatively, if the Marines are constantly stealing your kills, you can use the blue explosive canisters near the start of the mission to teamkill your marines and then just bounce around the map on your own to assassinate the Commanders, ignoring the Jackals entirely. Thanks to Darkened Night for the tip.
Note: There’s an active camouflage pickup near the Hornet at the beginning of the level which will make 1-shot blasting targets easier with the shotgun.
There are a total of 4 machine gun turrets located on either side of the path you follow in this mission that you must use to get at least one Wraith kill with each turret. You’ll want to start the mission off by hopping on the first gun and waiting for the Wraith to come down from the top of the screen. Then rush up to the first turret on the right to take out at least one more Wraith before moving straight across the path to the turret on the left for another Wraith kill. The last turret is to the top left of the area, and you will hopefully have at least one of the five Wraith targets left. The achievement will pop when you finish the mission.
This mission will introduce Brutes and the Brute Shot. At the start of the level you’ll have a Brute Shot right next to you, and for the duration of the very short mission, use the Brute Shots and grenades on the two doors you need to blow up, and melee the Brutes that appear for more Brute Shot ammo. Be sure to run around to pick up grenades from enemies your teammates kill, and from the couple of grenade boxes, to make the mission go quicker.
This mission is a rather wide open area full of tons of turrets and vehicles (Ghosts and Wraiths), but with your setup it’s not all that difficult to run through it.
Basically, you want to rely on using your hologram to distract enemies, allowing you to run the opposite direction. Using this effectively can reduce the fire you take substantially, and also help influence the many Wraiths to help you thin out the numbers via friendly fire. The main idea for this achievement is to just run from Officer to Officer (the objective targets) and take them out, then move to the next. I found the Needler available in a crate near the very first ghost to be satisfactory for this, but obviously doing it with the Sniper Rifle will be even easier since they’ll only take a single shot to kill. There aren’t a ton of grenades in this level, so be sure to use them primarily on the Wraiths>Tanks>Turrets, since that’s the general order of threat. Overall, it’s a pretty simple achievement, though you most likely won’t get the gold on this run.
I didn’t actually have enough space to fit the entirety of the campaign missions aced here, so I’m just going to link you a youtube playlist showing you how to do it.
While 25,000 XP may seem like quite a daunting task, it should eventually come as you repeat missions to get more stars and complete challenges (which also give XP). You may also want to use a skull or two, depending on how confident you are at the game (I played most of the levels with at least Hollow on).
There are 32 medals in this game, including multiple tiers for many of them (such as 3 kills in a row and 10 kills in a row give you different medals). To save space, I stacked the tiers together or merged a tier of different weapons. Your medals progress can be seen in the medals section of the main menus.
Double Kill – Killionaire : Get up to 10 kills in a row with less than 4 seconds between kills
Killing Spree – Untouchable : Get up to 20 kills in a row without getting hit
Rifle Spree/Pistol Spree/Grenade Spree : Get 3 kills in a row with the associated weapon without getting hit
Target Practice/Pistol Perfect/Cluster Bomb : Get 6 kills in a row with the associated weapon without getting hit
Contact/Gunslinger/Let it Rain : Get 10 kills in a row with the associated weapon without getting hit
*All weapons fall into either the Rifle or Pistol category, and only grenades count for grenade kills (Brute Shot is a rifle)
Splatter Spree-Sunday Driver : Get up to 10 kills in a row while in a vehicle without getting hit
Assassin : Melee an enemy in the back (backspace)
Sentry : Kill a vehicle with a turret
Anticipation : Kill an enemy with a charged shot (Plasma pistol only, hold left and right click on the mouse to charge)
Demolition : Destroy a structure with a grenade
Swiss Army : Kill 5 enemies with 5 different weapons
Wrecking Ball : Destroy an enemy vehicle with a vehicle of your own
Many of these can be farmed on the very first mission, if you’re having trouble with them. Chances are you will get all but maybe one or two of them naturally in a playthrough. Also note that once you unlock the medal, you can back out of the mission and it will still count.
Press E to swap weapons with those dropped by enemies and press SHIFT to switch weapons between primary and secondary.
Sniper Rifle (Costs 1,000 XP per mission)
Plasma Pistol (Grunts)
Plasma Repeater (Elites)
Focus Rifle (Major Elites)
Brute Shot (Brutes)
The final weapon, the Brute Shot, will appear on the Operation D Mission 1. You will start a mission with each weapon on the list at least once, but you can also find them all during the game, appearing in the order they’re listed in.
Press Q to use an armor ability
Auto Sentry (Costs 500 XP per mission)
You’ll get all of these at the start of at least one mission, and you can also find them all scattered throughout the game, appearing in the order they’re listed in.
You can apply a maximum of two skulls for any given mission, and this can be easily done on mission 1 if you apply Hollow (Spartan has only a shield) and Famine (Enemies drop weapons with less ammo). Really you can use any skulls you want, but those are the easiest. You can also get this done while doing the “Vidmaster Challenge” mission, as you will be required to use two skulls for that.
Initiate Operation E, Mission 1 and equip Hollow (Only shields) and Black Eye (Only melee recharges shields) prior to starting the mission. Also, I highly recommend spending 1,000 XP on the Sniper Rifle to make the last section a breeze (especially the hammer Brute).
Start the mission out by running up the right side and hopping in the turret to kill. Use it to kill the nearby enemies (try to save the next turret, but you don’t have to). Now use your active camo ability to survive the combat with the next few enemies. Once your path turns so you’re heading NE, use camo and rush straight North to the Wraith that is waiting for you. Use the Wraith to safely clear out all of the enemies, including the turret and other enemies along the road to the North (where you need to go). Once you’ve cleared the area, head to the Phantom where the objective is and pull out the Sniper Rifle to quickly take out the horde of Elites that come through the barrier to attack you and the Phantom. Once they’re all dead, you win.
Note that using this method should also get you a gold star on the mission.
For this you’ll need to focus on finishing the 75 mission-specific challenges, 3 for each mission in the game. The requirements can be found by looking in the challenges section in the main menus. In general, they range rather drastically in difficulty and the amount of time you’ll need to spend doing them, so you’ll want to look at them early on and try to take them out while you go through your playthroughs and try to get gold on all missions.
The massive Mega Turrets are your primary objective and you will start out in a Grizzly Tank, which you will want to use to take out all 4 mega turrets. This isn’t overly tricky, so long as you watch out for the suicide grunts, ghosts, wraiths, and other turrets that will try and work you over while you do the objectives.
Using these two skills will remove the HUD and increase the damage of the enemies. The first one isn’t so bad, I’ll just let you know that the three power conduit objectives you need to destroy are in the bottom left, bottom right, and top right of the main area of this very small mission. I recommend doing the objectives in that order as well, as there is a turret near the bottom left one that you can combo on, and save grenades when you destroy the glowing orb. There is also a grenade stash nearby so you hopefully won’t run out when you go to grenade the other two orbs. Once they’re all destroyed, head to the very top of the central area to find a turret that you can use to clear the area, before meeting at the door just North of you.