User blog:BF10/A Way to Make Levels More Challenging

OK, here is what this blog is for:

Bloons have the term NAPSFRILLS, which meant No Agents, Premiums, Specialties, Farming, Road Items, Lives Lost, and Selling. This made it a "slightly" more fun way to challenge players.

I had an idea when I saw this - why not do one here? I try to make things like this:
 * No money premium plants
 * No using eighth seed packet
 * No gem premium plants
 * No lawn mowers lost
 * No power ups
 * No extra plant food
 * No shoveling
 * No Wall-nut First Aids (this means you cannot replace any defensive plants)
 * No plant duplication (via Spore-shroom or plant food on Potato Mine, Chili Bean, Lily Pad, or Celery Stalker)

I need more ideas for this, so suggest if you want. But these challenges could make levels harder, including Neon Mixtape Tour - Day 32 or Big Wave Beach - Day 28, levels where this can easily be failed. How hard could those levels be if you were unable to do all of that?