Defense Grid 2 achievements

Defense Grid 2

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There are a maximum of 65 Defense Grid 2 achievements worth 2,147 (1,000)

48,453 tracked gamers have this game, 2,578 have completed it (5.32%)

Achievement Details

Shell-shocked in Defense Grid 2

Shell-shocked23 (10)

Using only Cannon towers, Win any Chapter 4 (or later) mission.

  • Unlocked by 9,133 tracked gamers (19% - TA Ratio = 2.30) 48,453  

Achievement Guide for Shell-shocked

512,034 (234,685)
Achievement won on 30 Sep 14
TA Score for this game: 2,147
Posted on 01 October 14 at 05:01, Edited on 13 May 16 at 12:23
This solution has 43 positive votes and 0 negative votes. Please log in to vote.
I did this in Normal Story, but this can be done on any mode/difficulty so I'd recommend Practice on Easy. (Credit to Clowny for testing)

Also, you CAN build boost towers. I didn't when writing the solution, but did when I did the level the first time I had 3 I believe. (I earned the achievement on accident surprisingly enough.)

Anyway, I did this on mission 16 (on Normal Story as said above.)
Right next to the orange core housing, there is a platform that has 3 intersecting squares (made of 10 tower spots.)
What I did was put 5 cannon towers along the edge of this to hold off most of the early waves.
After wave 3 I made them all level 2.
Some enemies made it past this group of towers during wave 5, so I filled the 3 sets of 2 squares next to the blue housing (I didn't have enough for all 6, so I filled 4 and then waited until I had enough for the other 2.)
During wave 15 I had trouble with the healers since my cannons had the temporal upgrade, so I upgraded all the ones at the blue core housing from level 1 to level 3.
During wave 24 I upgraded the 5 on the left to level 3.
During wave 26 some racers almost got away from me - the temporal upgrade probably saved me here. You don't HAVE to save all the cores, but if you want to, you might need to build a few more towers for this wave than I did. Rewind is your friend.
I was able to make it through the rest of the level without any problems. You'll have PLENTY of resources if you want to build more things, maybe build a bunch of extra cannons if you need the 100 achievement.

At the score screen the achievement should unlock.
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