Here is the walkthrough out of the Trueachievements Walkthrough:
You are going to want to try and avoid the traps in the opening vehicle section. You'll need to duck left and right around electrified fences that pop up in your path, the trickiest being where you need to slip through the middle of two. Doing so will get you the following achievement:
Otherwise there are a couple of Minikits to get during the vehicle section. Before the traps, destroy four of the six gold AT-AT walker ruins you pass to get Minikit 1. Once you get past the electrified traps and enter the area with the sinking sands, there's Minikit 2 in a ring of studs that's quite hard to miss (on the right of the screen). If you reach the cutscene, you've missed it.
When you get to the town, creep right and smash up the glowing debris. Multi-build right. Send Naka Iit (the little guy) through the grate and turn the wheel. Smash up your multi-build and build left instead. After the cutscene you'll start a Blaster Battle. Make sure to hit the explosive barrel in the pile of junk on the left immediately, to net this achievement:
Take out the remaining hostiles to finish the Battle. If you ride the hog thing eating the fruit and use him to smash the Cracked Lego Wall at the back of the area you can get Minikit 3. That's the only one you can get at out here for now, so head into the saloon at the back, and then head up the stairs to end up on the upper platform from the first area. Here's Minikit 8 that you can grab straight away, before scanning the structure to the right. Have Poe use the grapple hook that is revealed to destroy the structure. Jump back down to ground level and build a Resistance terminal from the debris. Use that and destroy the enemies inside and... you're done, apparently. That was short...
You'll get one achievement for completing the level, and assuming you got True Jedi, you'll also get the second achievement below:
Here is a video walkthrough: