Add some sentence instead of sings like "kill him, good luck, I need help ,stay together or I need a doctor etc to make it easier to communicate with teammates. I know that a voice chat is best but it will take a long time to do so and there are other problems regarding it but for now these sentence are best in my opinion.

Although I love this game and I want to see what it becomes in the coming future 

Thanks for providing such a great game 

Thank you