Supraland

Here is a video guide that showcases one way to get to the Giant's Workshop. This is a large hidden area in the Crash DLC.

Supraland DLC1: How to Get to the Giant's Workshop by Endubbaech

To get the achievement, you must go up to the workbench, then stomp on the guy who is stuck in a mold. He's part of the tools shown in the achievement icon (as well as the thumbnail of the video).

One of the houses in Orangeburg has a guy with a white button inside of it. This house is across from the police station. You can access the house by using the wooden sword knock ability. Stomp on the pots inside a few times (they respawn each time you destroy them) until the achievement pops.

After getting the sword, go back to Orangeburg and knock on the door to the building that is to the left of the police station. In this house should be a dry sponge; take it, soak it in the water near the rocket workshop site, bring it back to the house, and stomp on it.

Here's a video guide for locations of the red coins. They're located in the Giant's Workshop, a hidden area in the Crash DLC.

Supraland Crash DLC - Red Coins, Collecting Them All by RuneSnow

To get the actual achievement, you must collect all 13 red coins, then talk to the guy who is on top of the giant workbench. He will take them, then open one of the giant crates, and start gambling away at a slot machine.

Once the lego church is completely built (this is right on the outskirts of Orangeburg) you can use the force cube stomp jump and force cube beam to get to the top of the church. You need to be standing on top of the globe that's at the top of the church.

In Orangeburg on maybe the fourth or fifth loop (regardless, if you're doing cleanup at the end, it will be there, no achievements are missable in this game) you'll find a couple people next to a stick with a curved shadow. Use the purple gun on it to create a beam then right click to make it bounce towards you. A small sequence of events with the two people is triggered and shortly after the achievement pops.

Despite being very recently added, this achievement does not required ownership of DLC1 (as of writing, this is currently in closed testing for Tier 2 Kickstarter backers and not officially released).

You might need to update your game. Note that in the video, I show that you must use the "testing" beta branch. This step is no longer required and the achievement in fact does not work in this branch anymore.

In the starting town (Redville) of the game, you will find a magician with two boxes and a crowd. This is on the right side of town (facing the gate from inside the town). Shoot a green teleportation grenade into one of the boxes, talk to the magician, go into the box that does not have the teleportation grenade, then once the box is closed right-click to teleport to the other box. After a good ten seconds or so the achievement will pop.

Video demonstration:
https://youtu.be/wZ1wQc-TM3E