Boom Town

After your ride touches down, leap from the right side of the hatch that opens toward the rocky structure on the right to find an Object, Material, and a Sticker hidden behind the cactus. Now head left to find a Material, just below the starting point. Head right again and grab the 7 Costumes from the hut. Now check behind the cactus just past the hut to find a Sticker and Object, then continue up the hill (to the right) for another Sticker.

After the checkpoint, you'll have to jump over several cacti--you'll find two Objects along the way. After jumping over the last cactus and touching ground, check behind that very cactus for two Materials. You'll find another Material atop a stack of boxes--push it over to retrieve it, then check behind the cactus on the left for an Object. Now use those boxes to jump over the pair of cacti beyond, snatching the Object hovering above.

See that item behind the cactus? Yeah, we thought not.

Shortly after activating the second dynamite switch, you'll spot a cow on the left. Push it off the cliff, then drop down to grab a Material, as well as the Key it was holding. As you continue your trek up the mountain, you'll find an Object in plain sight just before the 3rd Dynamite switch. Speaking of which, prepare for a Material to roll down the mountain after blowing up the third set of TNT.

After the next checkpoint, grab the sticker from atop the dynamite, then from the adjacent house. After blowing up the aforementioned explosives, grab a Sticker that appears, then check inside the destroyed building for a Sticker, then climb on top of it for a material (just below the hanging creature). Now jump to the buildings on the left for another sticker, as well as a dynamite switch, which will destroy this building, revealing 4 Stickers. Now jump onto the hanging creature to the right to find a Key and Sticker. Now head back to the building you just leapt from, then drop off the building below and to the left to find another Sticker.

Look for an Object and Sticker on top of the bank, then an Audio Object on its left side. After crossing the chasm on the rocket, if you missed the Object floating in air, drag the rocket back to the left (you may have to grab it from inside the center area) and use it to reach an Object near the cliff edge. You'll grab 3 Stickers as you pass by the scorpions. Once you reach the explosives (beyond the scorpions) drag a nearby box to the far-right, then leap from the explosives to it, and into a tunnel on the right. Plant the Orange Bird sticker on the 5 Sticker Spots within to reveal 4 Stickers, 1 Material, and a Audio Object. As you roll the explosives back down the track, stop it just past the last scorpion and use it as a platform to reach an alcove containing a Sticker and 2 Objects.

After blowing up the Jail, check either side of the hole for 2 Objects and a Sticker. When you reach the first jetpack, explore the cavern above for a Sticker, Material, and Object. After blowing up the second barrier, you'll find an Object amongst a whole bunch of point bubbles. Look for another Object just before the cart you need to grab onto.