• Hint 1: SL Monk with Little Wizard
• Hint 2: Warden with Little Wizard
• Hint 3: SL Monk with any Eye Pet (Eye of Haste/Retinazer works best)
• Hint 4: Summoner with Propeller Cat + Eye or Jester Guardian

You can replace Warden and the Hint 3 SL Monk with a Hermit, EV 1.75 or any other SL characters, but you may need better Hero Damage and/or pet stats.

Set your Hint 2 character to be shooting at the yellow arrow and your other alts pointing at the black arrows. Where your characters are pointing can help your pets hit the kobolds, which is why they're pointed those ways.