Mortal Kombat X

Mortal Kombat X

73 Achievements

1,500

61-82h

Xbox One
Xbox Series
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Can't Stop This

Can't Stop This

Win an Invasion 1v1 fight

5

6.46%

How to unlock the Can't Stop This achievement in Mortal Kombat X - Definitive Guide

While playing during an invasion period you might get a message about an assassin from outworld. All you have to do is accept the fight and beat the assassin. I was playing in single fight and got three assassin notifications in a row so they're not very rare.
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16 Apr 2015 06:06

20 Comments
I just started a single fight in single player and after one match I got the notification that there was an assassin and had the option to accept or decline. I accepted and won. Easy achievement.
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By BrutalGuitar on 16 Apr 2015 11:27
Been playing MKX for about 2 hours today during the Invasion and I've not had 1 notification about an Assassin yet.
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By ReddersTV on 16 Apr 2015 11:49
It popped up for me during an hourly tower. It was about 10-15 seconds after the game had ended so if I had continued straight away I would have missed it.
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By SomeRandomDud3 on 16 Apr 2015 13:34
yep worked for me did about 5 single fights and it popped up for me
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By xONLY INSANEx on 16 Apr 2015 13:57
Now that the Invasion is live, I received a challenger notification after only my first Single Fight this morning. To people who are still trying to obtain this, the challenge should pop up right after all your fight results have appeared. Keep retrying matches, simple as that!
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By GrislyGrizzly on 16 Apr 2015 16:07
What is the invasion period anyways? I haven't seen it yet since I'm kind of new to this.
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By SweptbackFlame on 20 Apr 2015 21:09
Yep just did some single fights on easy difficulty for my fatalities and the invasion note came after the 4th fight.
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By MISS DAYUM on 04 Aug 2015 10:21
I accidentally declined one while doing my tower... how long until i'm offered another one?
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By count023 on 01 Jul 2016 08:50
Hi OP - I can't see this mode active for a few weeks now, can you let me know if I'm missing anything obvious?
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By Pete5683 on 22 Jan 2018 20:02
hello, I wanted to know if the invasions will come back
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By PyramidBr3ad on 03 Jul 2022 20:26
Doubt it
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By ThatiswhatidoeS on 03 Jul 2022 22:37
ah too bad, I saw someone having unlocked the trophy in February 2022 so I hope it will come back!
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By PyramidBr3ad on 07 Jul 2022 10:16
They're up now, but only a little less than 2 1/2 hours!
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By Ahayzo on 12 Oct 2022 01:39
I missed the invasion 😭 hope it will be back
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By PyramidBr3ad on 20 Nov 2022 11:21
Looks like invasions are unavailable again.
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By SnarkLord1980 on 07 Feb 2023 12:06
Still unavailable as of September 22, 2023……
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By WarMachine9494 on 22 Sep 2023 08:04
Still unavailable
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By RancidVessel14 on 30 Oct 2023 15:37
Available Now!!
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By RancidVessel14 on 03 Nov 2023 07:25
Really what’s the deal when is an invasion period active downvote until there’s concert info
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By ThatiswhatidoeS on 11 Sep 2020 18:16
Is there a special condition for this? I played many single matches over a few hours today and not one assassin challenge and invasion is still going as well....
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By JDFurbz on 04 Nov 2023 02:19
View all 20 comments Show less comments
When a invasion is active go to to single fight and play 1 or 2 matches, and you will get a message about a assassin challenging you, accept it and win to get the achievement.
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16 Apr 2015 18:30

During an Invasion event, after a match you will randomly get a notification that an Assassin is coming for you. Accept the battle and win to get this, I got this in single fight against the AI.
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16 Apr 2015 08:19

I'm adding this guide to discuss when the "Invasion" event becomes available.

These still work in January 2024. The event seems to be on a weekly basis, but the day of the week is random and they usually last for 24 hours. If you check in each day once under the Faction menu (Invasion Boss & Invasion Tower become active), you will hopefully find a point where an invasion is active. Alternatively on TrueAchievements you can check the "Recent Winners" tab on the right per achievement, when viewing the website in desktop mode, where you might notice if someone unlocked the achievement on the current day. For example in January 2024 the Invasion event was available on the 5th, 11th, 16/17th, 25th.

For this achievement, as the other guides describe, you can play "Single Fights" under the "One Player" menu or "Living Towers". After around 3-6 fights you should get a prompt at the end of the match informing you that an assassin wants to attack. Accepting the event will start the fight against the invasion assassin. Keep in mind this match will also be just 1 round if you have that configured in the settings. Winning the fight will unlock this achievement. In my case the achievement didn't unlock right away, only around 1 hour later, but that's probably a bug from Xbox.

Additionally, since the Invasion event is time-limited keep in mind that this is also the only time you can work on the following event related achievements:
Mortal Kombat XStay BackThe Stay Back achievement in Mortal Kombat X worth 11 pointsPlay an Invasion Boss fight

Mortal Kombat XINVASIONThe INVASION achievement in Mortal Kombat X worth 30 pointsComplete an Invasion Tower

Mortal Kombat XDIE WILL YOUThe DIE WILL YOU achievement in Mortal Kombat X worth 428 pointsDeal 1,000 total hits during Invasion Boss fights
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26 Jan 2024 09:17

2 Comments
Thanks for the tips!
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By Mohammad shadow on 12 Feb 2024 15:47
best/most informative solution here
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By chwzie on 16 Apr 2024 09:30

Invasion 1v1 fights are only available during an active Invasion event. To see if there is an Invasion in progress, you can check the Faction section of the main menu. Unlike the other Invasion related achievements, you do not have to be actively playing an Invasion game type to be challenges to an Invasion 1v1 fight. At anytime during an active Invasion, you can start up playing some 1v1 matches or a living tower and you should receive a message telling you about an Outworld assassin. You will be given the option to either except or decline the fight; accept the fight and win to unlock the achievement. It may take some time for you to be challenged so just keep retrying matches until you get one to pop up, they seem to be a fairly regular occurrence during invasions so you shouldn't have to wait too long.

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Invasion 1v1 fights take place randomly in the Hourly Living Tower (not Invasion Towers) and Single Fight matches. Sometimes after beating an opponent in a Living Tower or Single Fight, you will be asked if you want to play a 1v1 fight. When this prompt comes up, you need to accept it and beat the opponent! This is completely random so you'll probably have to replay a couple of towers.

It only works when Invasion Mode is currently online. To check if it's available, you first need to select the Online option in the main menu. This is to gain access to the online portion of the game and get connected to the servers. Now that you have access to the servers, go back to the main menu again and select the Faction option and see if Invasion mode is enabled; otherwise you need to come back later.

According to Panicore, the secret fight shows up more times if you keep playing Hourly Living Towers.

https://www.youtube.com/watch?v=ToMs23Rj9Qo

Credits: Panicore  
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