Apart from having a masters in HR, what more can help me to sustain with the cut throat competition in the global market and also to get noticed?

In addition to your master in HR try to:

1. Develop other managerial skills

2. Earn other support HR certificates

3. Try to Develop and build your experience

Thank You

To get a competitive edge in HR Profession you better go for some Global certifications in HR domain or the most hot line thing now a day in market is to get certified in SAP Module of Human Capital Management (HCM).

Wish you Good Luck !!!

Your Academic credentials will help 50% to improve your career prospectus, but there are other most  important things which you have to consider ,

1. Technological changes happens in the market very now and then, you have to grab the changes. For Example, even in HR the employer is opting different soft wares like SAP 

2.Improve your presentation skills, Communication skills and interpersonal skills.

3.Above all these factors, Don't forget certain qualities like patience , passion, smile on your face, self -confidence, liveliness  which portrays your personality  and boosts you to get attracted towards the employer to hire you and retain you.

4.Human Resource is one of the important department which has vast functions, so have basic knowledge in every aspect of the organization.

improve ur language and communication skills

You could probably try doing some certifications like CHRMP to get additional star to your Profile

always should be very freshness and make positive attitude, need well team organized capacity  

keep positive, well organized in your work and confidence will blow your success.