Here is the full list of all 84 Cobalt achievements.
Win two rounds in a row of Team-Strike with whole team surviving
Win one round of Team-Strike with whole team surviving
Wiped the entire opposing team in Team-Strike
Complete all speed challenge maps
Win two Team-Strike rounds in a row without dying
Win a deathmatch without dying a single time
Protect Bopo in Survival
Boost five reloads in a row without dying
Buy 100 Upgrades
Complete combat challenge by only eliminating the targets
Beat a combat challenge with 100% accuracy and 100% health
Complete a speed challenge under mountainhammer time
Complete survival wave without firing a weapon or throwing a grenade
Destroy one Radio
Reach level 10 dance
Dance to the tune of a radio playing music
Dodge ten homing missiles without dying
Kill ten enemies using physics
Kill an enemy with a kicked grenade
Buy ten Upgrades
Free ten prisoners
Find 30 secrets
Kill an enemy with a punched grenade
Dodge a homing missile
Find 15 secrets
Crack ten Safes
Boost 100 reloads
Rescue all prisoners in a combat challenge without them recieving any damage
Free one prisoner
Kill an enemy with a scoped bullet
Perfectly deflect a scoped bullet
Kill one enemy using physics
Kill five enemies without touching the ground
Kill two enemies with one bullet
Lockpick ten doors
Kill enemy with klonk
Mine ten blocks
Boost one reload
Heal two players with one nano dispenser
Tame a Sabretooth Hamster
Kill an enemy with a deflected bullet
Buy one Upgrade
Complete a speed challenge under par time
Kill two enemies at once
Blind one enemy with one flashbang
Kill an enemy with a thrown grenade looking away
Kill two enemies without touching the ground
Kill an enemy with your feet
Hack one Computer
Find five secrets
Kill an enemy while rolling
Lockpick one door
Perfectly deflect a bullet
Mine one block
Find one secret
Crack one Safe
Kill 100 enemies using physics
Kill an enemy with a Boomerang boosted by a Force Device
Blind four enemies with one flashbang
Blind ten enemies with one flashbang
Reach level 50 dance
Kill ten enemies without touching the ground
Mine 100 blocks
Win three rounds in a row of Team-Strike with whole team surviving
Hack ten Computers
Hack 100 Computers
Win five Team-Strike rounds in a row without dying
Kill an enemy with a punch to the head while rolling in the air
Kill four enemies with one bullet
Win four rounds in a row of Team-Strike with whole team surviving
Beat a combat challenge without firing a weapon or throwable
Free 100 prisoners
Win TS-match without dying
Unlock all unlocks
Complete all combat challenge maps
Kill five enemies at once
Kill ten enemies at once
Finish survival round as brain
Complete survival game without dying
Lockpick 100 doors
Crack 100 Safes
Destroy ten Radios
Destroy 100 Radios
Complete all puzzle challenge maps