Yes, you can absolutely delete and archive campaigns within Hunter!

If your campaign is still a draft and has not yet been launched, you can delete the campaign entirely by selecting the campaign, and opening up the drop down menu as shown here:

You will always receive a warning before the campaign draft is deleted as this action is permanent.

If your campaign has already been launched, you cannot delete the campaign. Instead, you can archive the campaign once you're finished with it to remove it from your main view as shown here:

You will always receive a warning before the campaign is archived as this action is permanent.