So I am having a bit of trouble with some grammar/sentence structure from a native speaker. I think I have managed to translate most of the items correctly. it is worth noting this is a video game and a lot of this has to do with salvaging things from an ocean or sea. 

 

One of the lines is 「おたからかいしゅ 」which I believe means treasure captured/caught/acquired. 「拐取」 or 「かいしゅ」 means abducted which I mean he did retrieve the chest from the bottom of a sea so that kind of makes sense. my problem is it does not appear that 「拐取」 is a verb or its one I don't understand also there's no particles like “wo” or “no” for me to make sense of this sentence. I am assuming it can be written as a full sentence that I would understand but the shorting process has left me confused about how it can be said like this. 

 

The other thing he says when he's about to jump into the sea is 「みんあきたいしまたね」 again I'm a bit confused on how this can be grammatically said. I think it's supposed to mean everyone wait with anticipation I'll be right back. but no idea how to construct something I would consider grammatically correct from it. 

  

「rex おみやげがきたいしてるプー」 I think this means "rex do bring back a souvenir" and then some random noise at the end it just sounds like ”puu ”to me. Which would make sense other than the ramming of the second verb「してる」 on the end of the verb「来たいし」 also not sure where the particles or even what particles should follow rex. 

  

The last one I can't even translate he does a special little dance when he comes up from the sea and put his arm in a y and says 「せこうじょう」 or 「せいこうじょう」 it could be without the long sound on one or both of the “ko” or “jo”. It's worth nothing this is a particularly spectacular treasure he brings up when he does this little dance and says this but I can't find any word like it.