On my first turn (the 2nd turn of the Duel), I summoned Snipe Hunter, discarded Rose Lover to take down Atem's Queen's Knight (the only card on his field lol), then use Rose Lover to SS Aromage Bergamot, then attack directly, leaving Atem with 100 LP left.
Then on his next turn he just Set a monster, and on my second turn (the 4th turn in the Duel), I draw Jasmine, summoned her, destroyed his Set monster (turns out to be King's Knight) with Snipe Hunter's effect, then attack directly with Jasmine, taking out his last remaining 100 LP xD