Tone - matter-of-fact, deadpan, mundane, unsophisticated, immature, crude, childish
Onomatopoeia - "crack, crack", "razrez, razrez" - allow the reader to 'hear' the sound of the violent acts.
Repetition - "red - red", "er er", "a a a", "first left fistie then right" - methodical, repetitive, focused, routine
Sentence structure - long and complex several actions are joined through coordinating conjunctions, "and", so that all actions are given equal importance. The sentence mimics the thought process of Alex and the frenzied and violent actions. The structure parodies an infantile retelling of events.
Metaphor - "red - red vino on tap" trivialises the violence and the results of the violence. Additionally, reflect the narrator's enjoyment and the entertaining quality for him of their actions by likening blood to "vino" and that it is a friend
Colloquial language, argot & slang - "veck's", "droog"