In this guide, you will learn where to get the Vital Sense in Warframe. Go through the guide and follow the instructions carefully to get it.
Vital sense can drop as a C rotation Reward from tier 2 defense missions, and you need to stay until at least round 20 to get the C rotation rewards.
The tier 2 defense missions are IO on Jupiter, Palmon on Europa, And Helene on Saturn; you can run either one of the missions you prefer.
It might take you a few runs before you get the mod. If you don’t get the mod in the first few runs, you will still get some relics while you are farming for the mod.