I don't know why, but the kerfur robot's pathing is so jank, that they end up stuck in water. Regular kerfus oftentimes get stuck near satellite sites because the base platform is less than an inch taller than it should be, as well as pathing near the river lake, often ending up in the water. As for omega kerfur, he just walks past the bridge and into the water, (As seen here (catbox.moe)).
Also the TAA is a real headache, I know it can look cool on screens, but it shouldn't look like that everywhere.