Fusion Genesis

My suggestion for this plus the other 'level' achievements, would be to constantly keep doing the first and second area of 'The Ark' over and over again. The things you kill give you insane experience and will level you very quickly. You'll eventually come to a state where you'll go though it once and not even level, but I guess this is the easiest method by far. Enjoy.

---------------------------------------------------------------------------------------------------------

Suggested Weapons to use during your grind;

There are two types of ships you may want to use during your time grinding in 'The Ark', you've got the 'tier 3' ships or you've got the 'tier 4' ships. I did it with a tier 3 ship all the way only because it moves much faster then a tier 4 ship, also just a side note that a 'tier 3' ship is a ship with 3 weapon slots and a 'tier 4' ship is a ship with 4 weapon slots. Now weapons;
Slot 1: Battlegun 3 or 4 - doesn't matter which one, but '4' is a bit more powerful then '3', to obtain this weapon you must get a certain amount of 'Warzone' points, which you are able to spend on in the 'trade post'.

Slot 2: Power Beam - this is a random drop from bosses, if you're going for just the first two places of 'The Ark', the first boss you face has a chance of dropping it, this will make the grind far more easier with this weapon.

Slot 3: Any type of sentient - for me I was using a 'Legendary Tank' sentient, which was a random drop from one of 'The Ark' bosses, you could use something else instead of a sentient, but it's always that little bit helpful if you want to use a healer sentient, which will heal your shield back to full.

Slot 4(Optional if using a tier 4 ship): Anything since the tier 4 ship will take a while to get it's shield taken down to naught, so it's optional on what weapon you want to use, whether you want to use another Battlegun 3 or 4,Power Beam or something else, preferably not missiles or mines.

Note: Most of these helpful tips came from 'Phoenix C64', credit for him for this section, and some to myself for making it look somewhat decent.

---------------------------------------------------------------------------------------------------------

Also if you want to know how you unlock 'The Ark', if you haven't already, you have to complete the final mission Judah gives you, which is pretty much to open up 'The Ark'. You'll get this mission roughly around doing your third faction, about half way though.

---------------------------------------------------------------------------------------------------------

Update; Just reached level 100, I can confirm that this method is the best way by far to reach it and it does take a fair amount of time. I also took the extra time to see if there was a level beyond 100, as the experience meter kept going up, I can confirm that level 100 is the highest level, once you reach the end of the experience meter, all the bars will be green.

This achievement is best left for last. You will of course earn experience running all of the faction missions and the Ark Raid.

It is highly helpful to grind warzones until you have a pair of Battlegun 4s. Under no circumstances do you need more than two. The reason for this is that even an uncommon sentient can buff your offense by 40% if specced for it (the first page of stats are buffs to the _player_), and a DPS has an active buff for an additional percentage. Thus two guns and two sentients can be about as effective as four guns, moreso if one is a DPS. This is before considering the sentient's own dps and other benefits.

Anyway, once you have a pair of BG4s and a tier 4 Order or Dominion Cruiser (note tier is separate from hull, there are four tiers of every hull), make sure you are specced into Clone. The Clone skill will allow you to solo the Legion Invasion in The Tempest region. This seems to be faster experience than grinding the Ark lobby, and has the added benefit of dropping legendary upgrades, every time. A legendary pulse upgrade or two will make it much faster.

Travel to the Tempest Region via the map, from there you can launch a Legion Invasion under Special Missions and specify that zone. There are only two approaches. Divide your time between the two, leaving a fresh clone behind and rebuffing just before you leave an approach. Focus on the turret upgrades and launch station security if you get into trouble. You should get 100 in only a couple of hours if you have unlocked all other achievements.

Once you finish faction missions, main story missions and do the warzone and Legion raids you should be around level 50. Best place to grind these levels out is the first area of The Ark. Do the first two areas and exit, then repeat. At first you will level up very quickly, but the closer you get to level 100, the slower you will level up. Keep at it and you will get it. If your struggling to survive The Ark, purchase a better ship and better weapons. I used a tier 4 cruiser equipped with Battlegun 4s, a uncommon healer and a uncommon DPS sentient. Battlegun deals great damage, the healer to heal your cruiser (shields and hull) and DPS to help with shields. With this setup, you will breeze through. You can get better equipment than this, it's just what I used. Good luck!