Be a tech operator, use aegis operations.
Have a few stats and substats that boost armor, maybe some hp, ofc still mostly engineering. Have a few substats that increase skill duration.
Have rapid charge on any of your loadouts so you can get signature ability up.
Defender drone 3-set specc’d to give 300% shield
Now unless the boss or the minions around them have flamethrowers, all you really do is just rush to the boss chest, activate your signature ability then immediately start looting the chest. As long as your shield’s up, bullets and nades won’t stop you from picking the chest up.
Ta-dah. Free chest. Best of all you can do this even when there are no other players around. Just get the chest then dip.
Considering solo DZ is really dog eat dog world out there, might as well just have fun once in a while.