1. Find a Group via the Ingame Chat or Friends.
2. Make your way through the Instance, until you get to the Bossroom.
3. Glitch through the windows with Noclip or Barrier and walk up to the Boss. (DO NOT ACTIVATE THE MISSION [WAVE BLALBLA])
4. Get the Talent, that reduces the Cooldown by 15% if you get healed.
5. Get the Overheal Skill and a Sticky Bomb on your Talents.
6. Spam Sticky Bomb next to the Boss, so the Boss gets hit by the AoE.
7. Do this with 4 Man, so it doesn't take to long.
Tips:
- You can use explosive Ammo (but your obviously limited to 3)
- You should or have to get Electronics Gear, this will Speed up the Process a ton
- Do your self a favor and don't do this alone.
- Explosive Ammo does not work with Unlimited Ammo + RPM (tested it). It has a own Timer to proc, it seems like.