Here is the full list of all 23 Cryogear achievements.
Defeat the first Emperor AI
Find and get the Cryo Mod Upgrade for the Charger Gun
Unlock, craft and upgrade the Charger to V3
Unlock, craft and upgrade the Lancer to V3
Unlock, craft and upgrade the Blaster to V3
Defeat the first Orb Guardian
Master all skills in one of the skill trees
Find Dr. Samonts TestLab and talk to Experiment Zero
Unlock 2 of 3 game endings
Complete a New Game + or NG++ Hardmode on any slot
Complete 3 VR areas
Find the hidden Nade Pong Arena and reach a Score greater than 10
Reach clone power level 20
Complete the tutorial areas and unlock the teleporter
Die and re-clone 20 times
Find and defeat 10 or more Guardian Bossfights
Hack 100 Uplink Terminals
Complete 100% of any game mode with all Weapons, Tools, Terminals and Guardians
Discover 5 secret areas
Craft 10 items
Kill 3 or more enemies with one charged shot
Unlock and ride the car in the bay garage
Have all weapons and drones equipped