Since Odion Lvl 30 does not use a card to destroy Mythical Beast Cerberus or prevent it from gaining ATK, you can win a duel against him with high Duel Assessments with using a High Score Cerberus deck. For an example deck and how to use it, check the link below.
well, the instruction is kinda confusing. it states to use a trap card(s) 10 times in a duel. so naturally the player would thought that they have to use 1 trap card 10 times. but that was not the case.