Originally Posted by
dekopong
1. さぁー、もっとあつくニャれニャウ!
(Come on, do your best!)
さあ、さあさあ、さあさ: come on, now, here comes, well (an exclamation, not having a "solid" meaning)
もっと: more
あつい>あつくなれ: hot > imperative form of heating up, he is wanting a heated up fight
2.くーらーえー、ニャウ!
(Take this! Meow!)
I'm not sure "meow" has the same impression... It is common for the characters in anime and games to have a weird termination(ナリー、ニャ、コポォ、だぎゃ、ぞなもし).
By the way だぎゃ and ぞなもし is actually a dialect(though rarely seen these days in real life, I think).
3.と、突然なんてことを言うニャウ
(w,What are you saying...It's so sudden.. )
突然: suddenly, in a sudden
なんてことを: なに= what 「なんてことをしてくれるんだ!」=What have you done!
In this context, he is saying like this because you are not saying something that fits the situation.
言う: say
By the way, what the player said is: "Marry me" It's quite hilarious and matches with Nyau's line.