My Egypt Diggy had no problems getting through this Event. This game is about clearing & building the your camp with the best QUALITY equipment. I mostly do the Events with that account & get the equipment from them. I got every Materials Cart available for the higher capacity.
If you don't have much of your Camp dug out, try concentrating on getting some of the taller slots cleared as they can accommodate all the equipment heights.
Also, you're not required to clear every tile in each location. As long as you complete the every task/quest, you'll get credit (gold ⭐.) Just make sure you collect the special items (jack knives) so you can get the equipment.
If the Challenges are too much, they clearing paths to just the goodies and the collectables items.
Additionally, I started making any Event recipe (not the ones using special collected the items, which is usually the 2nd Event recipe) as they take 5 minutes & can usually get 2+ rounds of just hopping on to do repeatable mines. Works out well if I need a few Cobain able foods to get me through a Challenge quickly, if need be.