Here is the full list of all 50 Cobalt achievements worth 1,000 gamerscore.
Blind one enemy with one flashbang
Hack one Computer
Kill two enemies with one bullet
Kill two enemies at once
Lockpick one door
Mine one block
Find one secret
Crack one Safe
Dodge ten homing missiles without dying
Kill an enemy with a scoped bullet
Kill one enemy using physics
Perfectly deflect a scoped bullet
Kill an enemy with your feet
Kill an enemy with a Boomerang boosted by a Force Device
Reach level 10 dance
Kill two enemies without touching the ground
Kill an enemy with a kicked grenade
Dodge a homing missile
Win one round of Team-Strike with whole team surviving
Win a deathmatch without dying a single time
Heal two players with one nano dispenser
Protect Bopo in Survival
Kill an enemy with a deflected bullet
Complete a speed challenge under mountainhammer time
Tame a Sabretooth Hamster
Kill an enemy while rolling
Win two Team-Strike rounds in a row without dying
Complete all combat challenge maps
Kill an enemy with a punch to the head while rolling in the air
Boost one reload
Complete a speed challenge under par time
Beat a combat challenge without firing a weapon or throwable
Free one prisoner
Win TS-match without dying
Kill enemy with klonk
Unlock all unlocks
Complete all speed challenge maps
Perfectly deflect a bullet
Finish survival round as brain
Kill an enemy with a punched grenade
Buy one Upgrade
Complete survival game without dying
Wiped the entire opposing team in Team-Strike
Beat a combat challenge with 100% accuracy and 100% health
Complete combat challenge by only eliminating the targets
Destroy one Radio
Complete all brain challenge maps under mountainhammer time
Dance to the tune of a radio playing music
Complete survival wave without firing a weapon or throwing a grenade
Rescue all prisoners in a combat challenge without them recieving any damage