For a challenge, try the single pick challenge in a nasty biome. In the thread on the front page, there's a reanimating tundra with aquifer and titans that show up by summer. If you don't bring that one plump helmet, walling yourself underground won't save you. You can get food from the pack animals, but that's hazardous, and without stone vermin will eat it quickly.
In the thread, it was eventually decided that freezing biomes are easier, because freeze drilling is a good way to pierce an aquifer, though it leaves you exposed to fliers. A hot biome that will evaporate any murky pools and has no vegetation or above aquifer stone was decided to be the nastiest. Red sand deserts, black sand deserts, and wasteland has the potential to be nasty.
For extra nastiness, pick a saltwater aquifer. Without embark booze, surface vegetation, or caverns, there are no drinks, which kills very fast. You can drink saltwater by desalination with a screw pump, which permanently uses all three wagon logs, so any workshop tasks will have to be completed, and you will have no building materials until you hit stone, unless you can deconstruct your pump for a block without losing water, without using a door or anything else built, and limited space above the aquifer. According to the wiki, you can drink saltwater with a well. This only permanently uses 2 logs, giving you a workshop, but you need a rope, and since no pack animals are she arable, I don't think that can be had til the caravan.
The one pick challenge thread had methods to pierce an aquifer of at least 3 levels I think without permantley using any logs, and I think the only requirement was a building material, so the desalination pump might be able to be deconstructed to make that and then you could pierce the aquifer, reach the caverns, and be home free bar random disaster, but it would not be easy, especially in a hazardous biome. Any reanimating biome can be nasty, because you have the potential to lose all access to the surface if you don't find a mass zombie disposal system (one such system described in the one pick thread), which limits growth to actually waiting for children to mature and prevents you from accessing any materials not found locally, unless you can somehow get caravan goods.
In addition, if you somehow find a terrifying Oceanside embark, you even have the potential to get zombie giant sperm whales trying to squash your dwarves, which if you play it right gives you access to what I think is the single most potent minecart projectile in the game.
Sure, a water cannon would make more sense, but do you have no pride?! You could flatten your enemies with a giant sperm whale, which would promptly reanimate and continue the slaughter. And you would have the satisfaction of having dug it all out by the hair of your beard, and a lot of luck, if you have zombie giant ravens in the locale.