40K Mechanicus inspired/Transhuman tundra base with a Valkyrie shaped assault troop carrier gravship. Third run. My favourite so far. Mostly just QoL mods with Layers: Capes and Armor for that 40K look. Rough RP rules were no xenogenes, full bionic replacement.
From a game meta p.o.v. the dog (or any animal or even a depowered turret) behind a door causes collision which means the enemies line up single file and wait patiently to enter the serpentine tunnel instead of bunching up. This video from AdamVsEverything explains it: https://www.youtube.com/watch?v=eTJf0-pusxQ
I like using a guard dog in a kennel as it doesn't break my role-play immersion like an unpowered turret would, and lines up with the pre-gunpowder forts I saw in West and South Asia that would have a guard dog kennel at the entrance.