u/Death-Wall

So I am a video game developer in a noida based company.
Due multiple reason the project is 1-2 month delayed, reasons were the game maths had some bugs due the that, the response in backend need to change, multiple animations update and, I had to integrate all of these into the game on the frontend side as a game developer. I am also handling two projects at the same time. The project manager threatened 4 days continously in almost every meeting, that he will fire me, he didn't threatened anyone in the meetings but me. He also made the HR to mail a preformance email. I got so frestrated that in the next meeting I said

Sir kya har baar aap fire kr dunga, fire kr dunga keh-te rahte ho, main be ager aap ko bol dun ki "main aapko goli maar dunga" to chalega?!

I am thinking of resigning.
What further action I can take against him?