Starcraft 2 Mastery Achievement Guide: Purity of Purpose (Legacy of the Void Campaign)

[@elcangridelanime]

This achievement took me longest of time but I finally got it!! The comment section have some great tips that I use. The Secret is to stop kerrigan Laser beam before she kill the target. That way Zagara can solo all her early wave if you weaken all the Thor and Tank to -10% health,and you can focus on Artanis and you Expo. At 50% you should start to surround kerrigan with PF. Banshees and Viking is the way to go. I add 4 Ghost academy and nuke the big enemy wave at the end. For the top lane get for 4 Bunker,1 PF,4 tanks,8 SCV repairing For the Southwest lane 2 PF and 4 Tanks. Just pull SCV if you need to repair. After that you only need to clean up the Air enemies. For Zagara and Artanis you will need to babysit longer but a few time nukes and Laser weaken it can be done with little problem.

[@Hirotoro4692]

Okay quick update after getting this achievement today: 1. Use nukes. Trust me. Whenever big waves are announced on the map by an ! is the perfect time to drop nukes. Have a couple cloaked spectres and practice how to time your nukes correctly. You want to time it so you pre-cast the nuke so that it arrives at the same time as the enemy bunches up in the choke point. By spamming nukes on top of Kerrigan (I spammed 6-7 spaced 3-4 seconds apart from each other) during the last wave ensures the area around Kerrigan remains clean and allows you to slaughter enormous amounts of enemies, this makes the last 5% really easy. 2. Weaken big enemies with Kerrigan's celestial beam, but don't finish them off. This takes practice, but hitting the S key and cancelling the beam with big enemies on as low health as possible before her beam can kill them allows your other units to claim the kill, so this doesn't count against the achievement criteria. Even bringing them to half health is helpful but you want to cease this practice entirely once you're past 50% and only use the beam on Thrashers from that point on, otherwise you waste time.

[@CasuallyCompetitive]

+Will Davis Lol nice! Ghosts would be fun, I'll have to play it again and try that.

[@ForeverGoth]

+Will Davis using celestial beam on enemies but stopping it before it gets the kill lol so cheese but genius! nice use of nukes, i love nukes myself but everyone pretends they dont exist >.>

[@pgplaysvidya]

If use the beam on the thrashers, you can even kill them with the banshees :P

[@mumblecake251]

@@ForeverGoth Oh that's because they can't see the red dot.

[@FlyingFlumpasaurus]

I rarely comment on YT but wanted anyone who finds this video to know that this strategy still works as of late 2021. I did the above whilst stealing allied geysers (they don't need them) and sniping units down to 10% health using Kerrigan. I also lowered the game speed from Faster to Fast, which gives you a little bit more time to act when needed. Save lots!

[@ITNODove]

I might be five years late to the party but thank you so much mate! This was by far the hardest achievement so far (I haven't done the last epilogue mission or Nova: Covert Ops achievements yet). It was the only one I needed a guide for because I just could not figure out how to do it. My game didn't go as smoothly as yours and the entire base was pretty much destroyed at the end but the efforts of many SCVs building stuff to buy time while a lone medic healed Kerrigan back up saved the day.

[@fireshark8637]

8yrs😊

[@CReaper210]

Great guide. This is the only detailed one I've found so far, I wish you would have made more of these. As Will said, Kerrigan's beam to weaken the larger enemies is a good tactic to go along with the strategy in this video. And those planetary fortresses were a good idea. They are what saved me, since I was pretty much about to lose at around the 99% mark, but they soaked up lots of damage.

[@geoffroycharpentier441]

THANK YOU VERY MUCH! I finally have 100% of achievements on every campaign ! So happy !

[@UltimatelyCloned]

Late to the party, but this guide got me the chieve, its very in depth, and cuts down on the fat unlike pretty much every other guide on the subject, which just show the entire mission. It is also a strategy that works with the game mechanics, since lets be honest, defense structures dont work too well on maps like these. Things I would add: 1.Be extremely careful of the thors, if you blindly send the banshees into fight them, you will lose all of your banshees (should be a no brainer, but) 2.Dont be afraid to use the celestial beam to get a few kills on accident.obviously dont try and get the kills, but there are about 7-8 void thrashers that spawn, so you have the ability to kill 5-6 dangerous units early on. 3.Make sure to spam the mercs when you can, you didnt say anything about using the mercs, and they are quick fodder to distract from your air force/add to your air force near the end 4.You can spam supply depots around kerrigan as well you buy yourself some time if you are struggling to defend and dont have the time to make a planetary, not as effective as planetaries, but can work in a pinch, just keep them at a certain radius since the air units eventually get in a range that they autotarget kerrigan. All in all, a great guide, and it helped me out a lot. I was tunnel visioning so hard on this, forgetting about All In where its all about the units over the structures (since all of sc2 is primarily about units over structures outside of co-op missions now)

[@TGOjohnnyY6492]

Yessssssssssss!!!!!!!!!!!! AT LONG F*ING LAST. Your guide led me to victory. Only thing I can add is focus archons and thors with invisible banshees and without vikings around (that splash will ruin your day) and then decloack to restore energy. Also probably need twice as much banshees as vikings. Oh and the achievemnt says nothing about the amount of units you can DAMAGE with Kerrigan's beam.

[@StandardTrickyness]

actually just knowing you can kill the first thor is like super important since it allows an early expansion.

[@skullmanwizard]

you let Artanis die. that is not a bro move.

[@ThePeruvian011]

one of the most difficult achivements I did (prob tied with 2.2 billion zerg on hard difficulty) I actually also used vikings, banshees and science vessels, although it would have been more helpful to have a more detailed guide like this one

[@CasuallyCompetitive]

+TheFlyingLlama Thanks a lot! It was definitely pretty challenging but a lot of fun. That other one you're talking about was awesome since it was basically a massive tower defense game :P

[@RobH73]

2.2 billion zerg was pretty easy with the nexus damage ability =)

[@RobH73]

This got me my ach. Thanks!