Shovel Knight: Treasure Trove

This can easily be earned against the Black Knight on the first level (Plains). As soon as the fight starts just start spamming the attack. He never even got close enough to attack me and he went down really easily. If he begins his jump and down attack, just dodge and get far enough away to continue spamming the Ground Spark. EDIT: Rather than spamming, you should just be waiting till the previous attack connects to attack again. Technically, only one Ground Spark can be on screen at a time.

Don't worry about having full health when you reach the boss as there is a healing item hidden right at the checkpoint right before the boss to refill your health.

You will need to purchase the Ground Spark technique from the Armor Outpost for 6000 Gold. You reach the Armor Outpost after defeating Plague Knight or Mole Knight. EDIT: Defeating Treasure Knight also opens up a path to Armor Outpost so any of those 3 will accomplish the task.

First off, I suggest going into options and switching your relic activation to Button mode so that you only have to tap to use relics rather than having to use the left thumbstick/d-pad and button combo. It makes the entire game much easier IMO.

First off, head to the Armor Outpost and purchase the shovel spark ability for 6000 gold. Head to the Plains mission and run through to the end. When you reach the Black Knight, make sure you have full health before the fight starts (use a health refill ichor from the troupple king before entering the fight screen if necessary) so that you create the sparks when you swing. As soon as the fight starts, just keep spamming . He'll never even get a chance to attack you, and at the end of the fight this achievement will be yours.

In the interest of creating as much of a one-stop-shop as possible, I've included 22 of the miscellaneous achievements in Shovel Knight in the video below. I wanted to include Knuckle Down as well, but the stage for that was already complete in my game and I haven't played back through again to unlock it. You can see the Sparker achievement at the 02:57 mark.