Halo: Spartan Assault

Halo: Spartan Assault

30 Achievements

1,000

20-25h

Xbox One
Xbox Series
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Immune

Immune

Finish a co-op mission without becoming infected

100

1.95%

How to unlock the Immune achievement in Halo: Spartan Assault - Definitive Guide

In order to get infected, an golden color flood need's to jump on your back.

The way I got this achievement is to load up level 1 with a friend, as it's the easiest mission to survive. Have both guys covering both sides of the map and kill all yellow floods ASAP.

Also, by killing an infected, a golden flood may come out of them, so be warned.

I wish you all luck.
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24 Dec 2013 01:05

3 Comments
I actually got this one quite by accident playing the third mission, the one where you need to stand on the platforms to lower the walls to let your partner thru. My partner had teleport equipped so he would stand on the platform to let me thru and would just teleport to me, without me having to stand on the other platform to let him thru. I literally just ran for my life barely shooting anything. The goal was to just complete the mission so I was really excited when the 100 point achievement popped. You won't be getting any gold stars but the run for your life method was effective
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By Angelic Beth on 16 Jun 2014 13:02
Thank you for posting. I couldn't figure out what I was doing wrong. Once I knew it was the Golden Flood I was able to get this first try.
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By Dyeus ph2ter on 09 Mar 2014 16:31
I need someone to help to get all the co-op achievements together. My gamertag is Hyp3rNova NL. Sent me a message if interested.
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By Hyp3rNova NL on 25 Feb 2022 16:26
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As bkilll25 said mission 1 w/friend is easiest...for a different strategy,
A) make sure both teammates use the loadout that has repel
B) if you have the creds, buy the 30% upgrade for repel
C) when level starts both players stay together and work your way to the left where the assault rifle rack is
D) with both repels upgraded you can alternate popping repel with your buddy and have a constant safe zone

Now staying close to rifles gives you ammo and the upgraded repels will keep everything off...you wanna watch out for the grenade chuckers as they are the only real threat if you keep the fog going...just have one focus fire on the left spawn and have the other concentrate on the right and they should funnel very nicely for ya

Side note...my buddy got this even though he died on the level, so if you go down, its not the end of the world or anything
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08 Jan 2014 16:00

Both good solutions, but if you get stuck playing with non-communicating randoms (like me) then I've found another pretty good solution.

1) use the overshield on your loadout.
2) pick the repel booster so the overshield lasts longer
3) when you start getting rushed turn on the overshield, the infection (golden) forms can't jump on you with the overshield active. They'll run right past you and go after your partner.

*note use the overshield armor ability not the regen field ability, regen won't keep the infection forms off you.
11
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02 Mar 2014 12:36

1 Comment
Worked like a charm! Got it in my first try. Thanks for the guide :)
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By xROELOFx on 28 Jun 2014 20:33
Everyone's Solution is really good. I just wanted to add a Video Guide to getting this done with randoms online. It did take me a few tries to getting it done, but eventually got a guy who knew what he was doing, and I was able to defend myself against those Golden Flood
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14 Jul 2014 23:21

I found a glitch in the game that really helps with this achievement, read on if you are struggling to get this like I was.

Load up Mission 1 and choose the load-out that gives you the UNSC Machine Gun. Load up the game and head for the ammunation box which should be on the left hand side of the map (a few feet from the West Spawn Point). If you fire your gun whilst standing next to this box you will automatically have your ammunition replaced once you've finished (giving you infinite ammo). Obviously this makes it a lot easier to kill enemies as you can have a constant stream of bullets flowing at the enemy.

Another tip is to use the over-shield as much as possible as you fire. Towards the end some golden Flood may slip under the radar and mount you so if you use the power-up whenever a golden flood is on screen you should be safe.

I was struggling with this achievement but using the method above managed to get it with my first go. Hopefully it helps everyone out.
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06 Jul 2014 19:08

In order to become “infected,” a Yellow Flood Spore will need to jump on you and latch itself onto your back. You will notice that when this happens, even though you can still shoot your gun and melee, you will not be able to remove the Flood Spore from yourself. After about five to ten seconds, you will immediately die and the Flood Spore will disintegrate unless your teammate shoots it off of you.

With this in mind, you will essentially need to avoid getting hit whatsoever by these Yellow Flood Spores. Just make that these Spores are top priority when they enter your field of view. If you can complete the entire mission without getting hit by on, or one latching onto you, you will unlock the achievement.

The Repel AA is quite useful when going for this achievement because once activated, it dispels a grey mist that repels the Flood for about five seconds. This gives you just enough time to back up, reload if necessary, and pour bullets into the Flood.

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