Tom Clancy’s Rainbow Six Extraction

Nothing complicated, you get the mine in the “devices” tab and place it on the passages in the raids themselves. Easily knocked out in two raids, you can use it for defense when you take out an operative, for example.

You can easily do this in training by unlocking a wave grenade, then you can throw them at nests and enemies, and repeat this until the required number, the grenades themselves can be picked up at the location and at transitions to the next territories.