Gears of war 4 campaign co-op challenge didn't unlock

- My Greatest Co-op Game List:-

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Red Dead Redemption (Multiplayer Online)

Left 4 Dead 2 (Campaign Co-op, Survival Co-op with Multiplayer Versus and other modes)

Left 4 Dead (Campaign Co-op, Survival Co-op with Multiplayer Versus)

Dead Rising 2 (Campaign Co-op modes, alongside with Multiplayer Competitive)

Halo Wars (Campaign Co-op and Multiplayer Competitive)

Gears of War 3 (Campaign Co-op, Horde co-op and Multiplayer Competitive)

Gerars of War 2 (Campaign co-op, Horde co-op and Multiplayer Competitive)

Gears of War 1 (Campaign Co-op and Multiplayer Competitive)

Dead Island (Campaign Co-op and Survival Co-op)

Well this may happen when you quit between a mission, you need to do the complete mission or the record wont load properly

Hey Demon Raider,

Thank you for reaching out. We understand you have been having some trouble with one of your achievements failing to unlock. If you haven't already done so, go ahead and check out our

Problems with Achievements page for some quick and easy troubleshooting. Additionally, we also have a

forum thread with some more in depth tips you can try. Hope this helps!

Sometimes it takes a few hours to unlock or if you didnt fully complete from start to finish it wont unlock.

In no specific order.

1. Halo 3 co-op campaign

2. Halo 4 co-op campaign

3. Saints Row 2 co-op campaign

4. Skyrim

5. Mass Effect 2

6. Borderlands 2 co-op campaign

7. Gears of War 1,2,3 co-op campaigns all great.

8. Fallout 3

9. Bioshock

10. Kameo

11. Half Life 2

12. Enslaved

13. COD: WAW