Deep Rock Galactic

I had the highest success rate on Hazard 5 missions with Morkite mining expeditions on the Crystalline Caverns, The Salt Pits, and The Sandblasted Corridors. (with limited success on Radioactive Exclusion Zone). Grab a Dark Morkite beer before you set out to make things even easier.

The objective is to blaze to the end ignoring everything except the Morkite. I played as Driller to minimize risk of returning to the drop pod as well as being able to dig around certain chambers that contained events or minibosses. With a bit of luck and good RNG you should be able to complete the mission is around 8 minutes without consuming too much ammo or encountering too many threats.

*The method I used for this achievement was done in 2 player coop but could easily be translated into solo play as Bosco is capable of doing a lot of heavy lifting all while not requiring any resupplies.

*This method will also work for the Rock Solid achievement and any of the lower Hazard level mission achievements.

That said there is a bit of RNG and luck involved with how the dungeon is laid out and what types of enemies/swarms you will encounter. We had a couple runs ended instantly when a swarm of Swarmers (the little ankle biters) or Bulk Detonators appeared.

If you refer to my "Rock Solid" achievement guide which is to complete 5 Hazard 5 missions in a row from start to finish, you should be able to get this achievement along the way.

Going into revive mode or calling in a supply drop will void this achievement.

To summarise, I played solo and used the driller with the fully upgraded Cryo Cannon (flamethrower would run out of ammo too quickly and would need a supply drop), and I did a 4 egg egg-hunt. I would kill most enemies at the beginning, leave eggs that are close together till last and hope that I wouldn't get many Oppressors or Bulk Detonators that would eat through my ammo. It took a few attempts, but you should only need a small cave with good egg locations to get this done.

Update: This method worked for me a while back but looking at some comments, it may not work for you. If you are having no luck after a few attempts then please try other people's strategies. The game has changed a lot since I posted this, they may have increased the difficulty of the egg hunts.

The other guides here are good but I have found a solution that has worked alot better for me personally. First you will want to look for an Aquarqs mission (the one where you get the blue gems out of the walls) biom isn't hugely important but I recommend avoiding Hollow Burrow and Glacial Strata if you can as The former has terrain that will make your life alot harder and the latter has the ice storms that will slow you down and probably get you killed and it's also a bit harder to find the Aquarqs in the icy blue walls. You'll be using scout for this one, Guns don't really matter but you will need the grappling guns Recharge time maxed out and either the stun sweeper or cryo grenade but I recommend cryo. Choose "solo" and load in, once in you will want to immediately look around and find a high up Aquarq and send Bosco up to get it, look for one you can get to quickly and go for it as quick as you can. Perks don't matter all to much but recommend the ones that let you throw heavy objects farther and the one that let's you get more health from red sugar. You will get a swarm eventually, try your best to clear it out but most of all... run. You're scout so you can get around the cave system quick, while you're running send Bosco to get any Aquarqs you see and try to deposit them when either you're safe or have some distance from the swarm. You're only true threat are Acid Spitters, Septic Spreaders, And Mactera, but as long as your mission doesn't have the "Mactera Swarm" alert it shouldn't get overwhelming if you're targeting them. I know this sounds like alot but I promise it's not that hard in practice. Happy hunting gamers!