The chat messages are actually in Japanese (but that user uses Romaji instead of Kanji and Kana).
"Yowasugi" = 「弱すぎ」 (Translation: Too weak)
"Omae zako" = 「お前 雑魚」 (Translation: You are just a nobody)
"Yowasugi" = 「弱すぎ」 (Translation: Too weak)
"Omae zako" = 「お前 雑魚」 (Translation: You are just a nobody)