If you want to get 60/60 Cold mods in Warframe, this guide will help you get them.
60/60 cold mods can drop as a reward from various spy missions across your Star Chat. Most of them drop as C rotation rewards, meaning that you’re going to have to get all three data vaults to have a chance at getting the mods.
You can use any frame you want, but it is recommended to use frames that can teleport past defenses like laser walls or resist being knocked down.
The mods that can drop from here as a C rotation reward are Frigid Blast and Frost Bite. The mods don’t have the lowest drop rates, and it shouldn’t take you very long to get the mods.
The next mod is Rime Rounds, which can drop as a C rotation reward from the Lua spy missions.
The last mod is vicious frost which can drop a c rotation reward from tier 1 spy-missions which are spy missions that are level 1-15.