Obviously you'll need lots of grenades.
Get TKM so you can meditate your wounds away and to get the full 5500 Combat XP per kill.
Then you'll need Commando 4000 to be able to use the Imperial Detonators (a friend and I extensively tested the difference between thermals and imperials and found out that against the Giant Baz Nitches the imperials are better)
Also Commando 4000 gives you a slightly increased throwing speed. Faster is always better.
Secondly you'll need to buy those imperial detonators. As you'll need about 10-12 crates with my method (25 grenades per crates) per branch you can calculate yourself how many you'll need.
Those powerups, which add about 700 extra maximum damage will significantly increase your grinding speed. They are available in crates of 10, so you'll need 2.5 times more of those crates than the grenades.
So you're a TKM, 4000 Commando. Go find a solo group with 10 people or more, to be able to get the Giant Baz Nitch missions on Dathomir, which are worth between 11,000 and 11,900. The group size makes sure you'll get missions with a difficulty rating of 99 or higher, so you'll get the maximum amount of creatures per lair.
Before driving to each mission, get 4 grenades from your crates, power them up, and put all 4 of them in your toolbar.
Then take 2 missions to the same direction. As you arrive at the mission, make sure your speederbike is like 10 meters away or else the radius from the grenade will damage your bike.
Target the lair, go stand right inside it and start throwing grenades. As your have the lair targeted you'll never miss and the Giant Baz Nitches around you will get hit, hard. They will sustain between 1500 to 4500 maximum damage on one random HAM bar.
To be most effective (and trust me this is actually most effective) you gotta throw 15 times in total, so you'll have used up 3 grenades.
By the time your first grenade is gone you'll start killing them and new ones will spawn.
By the time you used 3 grenades you'll have killed about 10-12 animals and gained 50k to 60k Combat XP. You'll get 5000 + 500 Combat XP per kill.
Most of the times 15 throws is enough to kill 10-12 animals, then just kill the remaining with your vibroknuckler and unarmedhit3.
If there are 3 animals still attacking you can throw that spare 4th grenade 1 or 2 times extra to get some extra Combat XP instead of Unarmed XP, but please don't bother killing the final creature with 4, 5 or more throws as that will take too much time. No more animals will spawn out of that lair anyway and it's just a waste of time.
Then as you go to the second lair, get 3 grenades from a crate, power them up and put them on your toolbar. Then it's just the same as with the first lair. Throw those 3 grenades, kill about 10 animals with the grenades and the remaining 2 or 3 with TKM. Another 50k-60k Combat XP.
As you must have expected we will the be travelling back to the first lair, not forgetting to get 3 new grenades and power them up.
Just throw those 3 grenades, again kill 10-12 animals, kill the remaining almost dead animals with TKM and destroy the lair with TKM aswell (takes about 6 hits as you maxed out the number of animals that can spawn from that lair)
Go to the second and do the same.
As you travel back to the outpost you press CTRL-S and notice you'll have 200k+ Combat XP.
Arriving at the mission terminal you decide that it would be quite handy to take a mission to the east or southeast, cause that's where the village lies. Don't take a mission to the south or the northeast, cause the time travelling will take you longer than the time finding a mission to the SE or E.
As you travel to the mission, with of course 4 grenades in your toolbar, you notice that you only spent about 15-20 minutes getting 200k Combat XP. As you arrive at the lair you need to destroy, you start throwing those 3 grenades again. As soon as you killed those 10-12 animals you leave the lair alone, mount your speederbike and head to the village to convert your Combat XP into FS XP.
It is very important to leave that lair alone. Spending more time at that lair is only a inefficient waste of time and you must not delete that mission, cause that's all part of the plan.
As you arrive at the village you start realizing that you will gain about 92k FS XP.
* You leave the village, get trained by Noldan if you have the skills unlocked you want and enough XP to train and you head back to your mission.
As you arrive at your mission you'll notice the lair is still there, the lair is closer to aurilia than then science outpost, you didn't have to refresh 10 times to get a mission and 5 new animals have spawned ready to eat grenades.
You throw your 3 grenades again, kill about 10-12 animals, kill the remaining almost dead animals with TKM, destroy the lair and head back to the science outpost.
As you arrive at the outpost you'll already have 50k Combat XP.
You take 2 missions to the same direction (any direction will do) (preferably take missions that are as close as possible to eachother and the science outpost as 1000 meters travellling takes 1 minutes)
You do the same as described above. Go the 1st mission, kill 10-12 animals with 3 grenades, 2nd mission 10-12 kills, 1st mission destroy, 2nd missions destroy.
As you drive back to the science outpost you'll see via CTRL-S you're already at 250k+ Combat XP and you'll cap at 300k with this run and the remaining 3 runs after this (2nd) one.
At the science outpost you'll take one mission to the E or SE and hit the lair with grenades until you get the message you have achieved your maximum of Combat XP. Don't bother killing anymore animals, as that will be just a waste of time. Fetch your bike and race to the village to collect your 100k FS XP.
Trade your FS XP and go the red star above to repeat the process.
Note that when you get back from the village and start killing that mission to the east or southeast you abandoned cause you capped your Combat XP on your way to the village it may not always be fully vulnerable, since you never had the maximum spawn when you did that mission the first time. In order words if the lair only loses a small amount of "health" per hit just kill the lasts almost dead animals like you'll always do with TKM and head back to the outpost and just delete that mission. Who cares about that 11k pocket money anyway, it's the XP that matters
Any questions, feel free to post and I'll answer them.
