You can survive on Mars with protection similar to that required to summit Mount Everest. Mars is a little colder and a little lower pressure and you need oxygen for both.
Also, Mars' soil has toxic amounts of perchlorates[2]. You wouldn't want to breathe them in or have them touch your skin.
[1] https://www.quora.com/Is-it-possible-to-breathe-and-survive-...
[2] https://www.space.com/21554-mars-toxic-perchlorate-chemicals...
[1] https://biology.stackexchange.com/questions/16741/what-is-th...