Here is the full list of all 23 11th Dream achievements.
Travel 1'000 meters
Travel 11'111 meters
Zoe and Bios meet finally
Find a good weapon in Force
Finish Connection under 30 seconds
Purge friends first in Rapture
Finish Return without killing enemies
Reach BrownBot before MineMaster
Kill 11 bots.
Kill 25 bots
Kill 75 bots
Kill 225 bots
Kill 404 bots
Kill 666 bots
Win a skirmish with at least 10 kills.
Reach specs level 25
Reach specs level 50
Reach specs level 99
Finish campaign.
Finish campaign on hard difficulty
Finish campaign on extreme difficulty
Kill 5 enemies in row without dying
Obey ID Master and lose