The right weapons per your class that you use and the know how when it comes to using your powers.Being level ~20 is going to be almost necessary as you are gonna need every available power upgraded as much as possible to give you the advantages you will need.There are many factors that would come into play that will assist you in completeing a Bronze mission solo: I used no equipment but had to use medi-gels and rockets becuase lucky me had 3 hacking missions on my solo.sigh Me soloing Bronze as a Human infiltrator, all my points in everything but cryo blast, using Black widow and M-3 Predator.
