In Obenseuer, access to various locations might be locked behind blocked passages that have to be dealt using certain tools. An alternative to blocked passages are a locked doors that might be lockpickable or may require a key.
Crates sometimes blocking a passage can be broken apart with an Axe or an Sledgehammer, using an Axe will require several hits while Sledgehammer breaks them down in one swing.
Locations
Blocked entrance to the ground level storage of the Deekula A.