This paper presents the development of the Tundra Nenets Universal Dependencies (UD) Treebank, the first syntactically annotated resource for the Samoyedic branch of the Uralic family. The treebank integrates spoken-language data and adopts the morphologically enhanced Surface-Syntactic UD (mSUD) framework to capture inflectional morphology and morphology-based syntactic relations. It further incorporates Information Structure annotation. The methodological workflow includes data selection, transcription conventions, sentence and lexeme segmentation, annotation of spoken-language features, lemmatization, treatment of morpheme status, part-of-speech and morphological tagging, and syntactic annotation based on the functional and distributional properties of syntactic elements. We also outline the principles guiding multi-level annotation and justify the theoretical choices underlying the integration of prosodic, morphological, and syntactic information.