Lanzo Baumann is a so-called Kill List Target - an opponent you can eliminate as part of the optional challenge. You will encounter him in mission 5 (Festung Guernsey) of Sniper Elite 5 . The walkthrough in our guide describes the mission objective's location and how to bury Baumann in concrete on the construction site.
The whereabouts of the kill list target
Lanzo Baumann is on the construction site throughout the mission, where the second Mirus battery is being constructed, and a separate side mission is associated with it (sabotaging the work on the gun). It is an area in the eastern part of the Guernsey map.
Baumann is a Kill List Target. You should try to kill him in a unique way by burying him in concrete (throwing him into the concrete before it hardens). The reward for a special kill is a Type 100 bonus weapon.
Killin Lanzo Baumann
You should find Lanzo Baumann in a small building adjacent to the main part of the construction site, but to be sure, you can use binoculars to confirm his identity.
We suggest to stun the target.. Sneak up on Baumann from behind and perform a takedown to knock him out (don't kill him right away)!
Pick up the unconscious Baumann and carry him towards the construction site. Take him to the place shown in the picture, from which you can see the poured concrete at the bottom. There is a railing here that you can damage.
The last step is to throw the body over the railing - Baumann should "land" in the poured concrete below and be "buried" in it immediately. This will allow you to complete the optional challenge.