Step Goal Achievement in Mortal Shell
Kill an enemy with a bear trap.
How to unlock Step Goal
There are a ton of bear traps scattered around the Fallgrim area. If you or an enemy step on one, it does minor damage and stuns for a few seconds as it gets rearmed. You can bait an enemy to step on one over and over until it dies, or hit them once or twice first to speed up the process as only the killing blow needs to come from the trap.