Spoilers: (Highlight to reveal)
The Obelisk

This is a training ground. Here you will refine your kombat skills. You start out learning the basics.

Round 1: Soopah-basics. Step up to the Jungle Trainer and hit X-X-X, then Y, then X-X-Y, then A, then X-X-A to finish this round.
Round 2: Dodging (useless) Here you learn to dodge. Hold Right-Trigger and press X, then Right-Trigger and A, then let the Jungle Trainer hit you and hit A just before you hit the ground. The last step is done twice.
Round 3: Grabs Just walk up to an opponent and press B to throw them. Then use the throw combos. First B-X, then B-Y.
Round 4: KOMBAT!!! Here you fight Jarek. He's a vast step up from Kobra (though I still got a Flawless Victory against him), he parries and he uses Breakers. His Kick Axe style can be tricky and is pretty potent. Just pummel him silly and move on.
Round 5: Earth-Shakah!!! Use the Ground Pound twice to proceed.
Round 6: Drop A Train On 'Em! Perform Fatalities on the Jungle Trainers. Just punch them once and they'll be ripe for the fatalitizing. X, Y, A and B are all different Fatalities, so do what you will to them.
Round 7: Kill 'Em All. This is you versus three Jungle Trainers, no holds barred. Just keep throwing them into each other or use the X-X-B combo to keep them at bay (the X-X-B combo will also asplode them if their health bar is empty by the time you get to the B).

Botan Jungle, Part 2

After the training sesh, look around behind the Obelisk to find a chest with Kobra's alternate attire. Continue back down to the fork and go right to find an area with what look like Moai (those Easter Island head) statues shooting giant shurikens out of their mouths. Destroy the two statues in front of you, then Ground Pound the ground where you see the fist mark. This will reveal to you a chest with 1000 Koins in it. Continue into the trap area. One shuriken hits you, you'll be looking for a new head. You can either wait out the shurikens and find the pattern, or you can be impatient and roll under them. I choose the latter. After the second bladetrap and just before the third, look on the left side of the path to find KONQUEST RELIC #4: JOHNNY CAGE'S PICTURE (it even says "To My Best Fan: Cage"). Open the chest with 500 Koins in it, then go into the big, open area. There you'll be ambushed by Black Dragon Thugs. These guys put up no fight, so just slap 'em around. Once they're dead, enter the building on the near left side of the route you came from to find the Tekunin Warship tune, then look in the far right one to find KONQUEST RELIC #5: JAREK'S VEST (his vest from MK4). The other two just have koin bags. In the next area, you get to smash other warriors with a hammer. However DO NOT START PLAYING WHACK-A-THUG AS SOON AS YOU ENTER. Look around the area first. You'll find KONQUEST RELIC #6 - KABAL'S MASK on the left side and a chest with Kabal's alternate costume in it on the right side. Then start smashing. The A or X buttons work best here, but you'll get good results with Y or B as well. After the weaklings are dead, you'll fight Kabal.

Vs. Kabal
Kabal loves his Hookswords style, he parries and uses Breakers, but he's pretty easy to whup. Just get in there and make him uglier than he already is.

After Kabal, you'll enter the Temple Of Argus.

TEMPLE OF ARGUS

Immediately after you enter, go to the left and right of the entrance to find two chests, one with 500 Koins and the other with Kung Lao's alternate costume. Then proceed to the left, hugging the wall to find KONQUEST RELIC #7 - DAIROU'S KEYS (I think they're the keys Dairou used to help Shujinko escape in Deception's Konquest). Go back the way you came and hug the right wall to find KONQUEST RELIC #8 - HOTARU'S FLAG (the samurai flags that make you think of Tekken/Soul Caliber II's Yoshimitsu) in the corner. Then go into the center of the room. You'll be ambushed (again), this time by warriors in red. Their grenades will drive you batty, but they do minimal damage. Waste them, then continue. In the next hall will be statues that spit fire. Analyze the pattern, then continue. If you're caught in the fire, chances are you're going to be turned into a barbeque. After the fire, you'll find a hall with crusher traps. The first two are pretty basic to get by, but the third has a pattern. Find it and continue. After the third trap is a sphere with Taven's tattoo on it. Grab it and it'll increase your health and max out said health and special bar. Continue into the next room and more red fighters will attack you. Fortunately, this time you can just Ground Pound, uppercut, roundhouse kick or throw them off the balcony. During or after the fight, you can find KONQUEST RELICS # 9 & #10 - STRYKER'S RADIO (though I've never seen it, might be MK3) and MOLOCH'S BALL (ball and chain weapon he carries around, you perverts) along the balcony in the corners. After finding them, you should unlock Meat (hidden MK4 character). Once the red guys are dead, open the chests. The one on the right (from where you come in) has Ermac's alternate costume. The one on the left is a poison trap. Immediately after opening, run away so you don't get poisoned. Or just don't open it. In the next hall is more crushers. They all have a different pattern, so look for it and run. At the end of the hall is KONQUEST RELIC #11 - HSU HAO'S WATCH (what time was it again?). Continue into the next room, then head to the left to find another health sphere. This one should lengthen your special bar. Then continue into the chamber. You'll be KO'd by Sektor at the end of the cutscene and taken aboard the Tekunin Warship.

TEKUNIN WARSHIP

Sektor's got a pretty nice warship. 'Cept Sonya Blade is shooting holes in it! When the cutscene ends, you'll be given 30 (though it's more like 5 or 7) minutes to escape. So be quick. If you took the right path from the start, you'll find Hsu Hao's alternate costume in the techno-chest on the right side of the path. The left path has KOMBAT RELIC #12 - CYRAX'S BOMB (like I'm going to take a bomb. BOMBS EXPLODE!) and a chest with 300 Koins. You can get them all, keep in mind, so either path is good. In the next room, search the dead Tekunin guys for a key. First, however, get the glowing MK chest with the Elder Gods Armor - Male Belt. Then about halfway through the room, you'll find more bodies. One of 'em has the key. However, immediately after the first downed big electrical wire, hang a right to get another power orb. This one, like the last, increases your special bar. Then search the bodies nearby for a key. Kick open the chest near the glowing panel to find Hotaru's alternate costume, then proceed. In the next room, there will be a large fan you can uppercut opponents into. However, first look around the broken door on the left to find KONQUEST ITEM #13 - NIGHTWOLF'S AXE (it's a tomahawk; get it straight), which is pretty hard to find unless you look in the corner by the door. Then lead the unsuspecting Tekunin toward the center and uppercut them to make quick work of them. When they die, open the chest to find Cyrax's alternate in the top of the room. Then head right into the next area and you'll get the Fire Ball attack. You'll be using this a lot, so get used to doing it. It's Left-Trigger-X. You can also throw Tekunin guys off the bridge and into the wall in this room. At the far right corner is KONQUEST RELIC # 14 - SEKTOR'S ROCKET (Houston, we have a problem.), so grab that too. Then enter the next room. More enemies are going to be abound, and so will KONQUEST RELIC #15 - JADE'S BRACELET (brace yourself for a fight). Grab the relic, then the Pulseblade. Just like with the hammer, the X or A buttons are the way to go for quick kills (which really matter here). Grab the chest with Baraka's alternate costume on the right side of the room, then head left (from where you entered). You'll see two Tekunin guys at work. Kill them both. The second one you kill will have KONQUEST RELIC #16 - SONYA'S ID BADGE. Then go into the next room and fight Sektor.

Vs. Sektor
Sektor's not exactly a pushover. He likes to do his Teleport Punch so if you see him going for it, block. He doesn't switch his style or use his Pulseblades often, but he can whip out some killer combos with them. Watch for what direction he shoots his rockets. Duck under the horizontal and move to the left or right to dodge the vertical. Get in close so he can't use his long-range moves and re-program him to lose. He'll also block a lot, but don't grab or you'll put him in prime position for more long-range attacks.