Halo: Spartan Assault

Halo: Spartan Assault

30 Achievements

1,000

20-25h

Xbox One
Xbox Series
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Flooded

Flooded

Complete all co-op missions

60

2.4%

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

I noticed there was no Guide to this achievement, so I thought I'd add one. This achievement is really straight forward. Just complete Co-op missions 1-5 and it's yours. This would probably be easier to do with a friend, but I have come across some people online who know what their doing. Anyway, here is my Video Guide showing every mission and what you have to do.
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11 Jul 2014 00:29

11 Comments
any fixes to get this to pop? I'm sitting at 100% and can't seem to find any help.
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By jnich87 on 29 Jul 2014 20:54
No clue. The Boyfriend and I had no troubles with it popping, nor have I heard this issue with anyone else.
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By Trish Rulz on 29 Jul 2014 23:50
Hmm. Alright then. Thanks.
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By jnich87 on 30 Jul 2014 12:01
Mine's now sitting at 100% (not "Done...Unlocking"). Has been for 5 days...
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By spankyNspronkle on 18 Mar 2016 13:54
That happened to two of my friends yesterday. Still no luck? Maybe try tweeting 343?
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By Big Ell on 29 Mar 2016 15:00
Can this be done local co-op?
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By Mike Langlois on 09 Aug 2018 13:17
anyone who cant find a friend and wanna do this and other co op achievements, just contact me, i need another player~~
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By ZachVZachV on 16 Mar 2019 13:02
I’m done to help out as well as I need them too I have both versions Xbox 360 and Xbox one
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By MasterFormKing on 05 Apr 2020 03:13
I'm looking for help for all the co-op achievements.
GT: general1179
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By general1179 on 05 Jun 2020 01:30
Hi, I am looking help with all if the co-op achievements. My gamertag is Renzo3600. Timezone GMT
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By Renzo3600 on 11 Jun 2021 15:34
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 16:25
View all 11 comments Show less comments

There are only a total of five Co-Op missions in Halo: Spartan Assault. Unlike the Single Player missions where all you have to do is get from Point A to Point B while killing everything in your path, the Co-Op missions are designed for, as you may have guessed, nice cooperative and tactical combat and gameplay as you may need to hold and defend a Forerunner structure for five minutes, or strategically work together to shut down an entire Forerunner facility by destroying its fusion cores. This achievement shouldn’t pose as too much trouble, but be ready for missions three and five, as those are the harder of the bunch. The achievement will unlock once all five missions have been successfully completed.

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