After just popping this today I'd like to add a brief guide. I completed the last bounty with only only 6 min remaining but that was after a waypoint bugged and had no idea where to get the very last bounty completed.
To start this challenge change your matchmaking settings to solo and head to Orb Vallis on Venus. Outside Fortuna entrance is a Solaris United agent. Select the lowest tiered bounty "Agent Down" and repeat this mission from him 6 times. Do NOT re-enter Fortuna or the achievement progress is void. Simply come back to him and re-select it, even though it says completed you can do it again. If this bounty is not available let it cycle or choose another if you like, however I feel this bounty is the fastest in my experience.
The requirements to be able to start and finish this bounty in time I feel are as follows:
- Open up the star map to Venus, specifically Fortuna and Orb Vallis;
- Complete the intro Solaris United quest to open up all the bounties;
- Any frame can do this but I'd recommend a tanky or sneaky frame like Loki or Rhino (I used my Rhino Prime). The last part of the mission is usually a hack, failing this means you would need to start from the beginning;
- Forge and bring at least 20 ciphers in your gear wheel. The hacks are easy but time is the true enemy here;
- You MUST have an Archwing (energy pads a bonus);
As for tips for the actual bounty:
- When looking for the SU crew in Stage 2, enter on Archwing and they should pop up. Leave the circle and re-enter if still missing someone;
- If you need enemies to spawn for 25 kills, let the human enemies plant beacons which will raise the alert level, thereby making this a but more hectic but ultimately faster;
- If you take longer than 10min each for the first attempt, head back to Fortuna and reset your progress, you want 8min to comfortably do this challenge as there is downtime between finishing the last bounty and starting the next along with travel time
Hope this helps everyone! Any questions or suggestions throw it in the comments and we'll flesh this solution out together!