Restless Metal

Use the Master Key to destroy or subject 10 Mechanoids on the secured perimeter and return to Grigory Chilin.

So here is the thing. While there are still hordes of tin cans rambling around, we cannot resume our research. So, we need to get rid of them.
We have two options. We can just brutally wreck them, but also we can make them work for us. I saw Elena use an ingenious device that can control them... Here, I have one, too.

Don't waste time. We can't make it out of the barricades while these Mechanoids are around.

Alright, minus several tin cans. Now we can search other barricades. Most probably, we will find something that deserves our attention.