You can absolutely have separate landing pages.
Each Campaign you create in Kindful (Settings > Campaigns) gets its own unique URL that can be used. You can access this URL by going to Settings, clicking on Campaigns, and editing the specific Campaign you are working on; the URL displays in the top right corner of this page.
You can customize the specific donation amounts (up to 4), have custom language on the page (the Description).
You can even set a custom image to the Campaign as well.
This is a great tool you can direct your donors to give specifically to your mission!