This wasn't too hard on the first level, BUT I have some advice to make it (and the game overall) even easier.
It seems you can turn on a lot of settings to make the game really easy and as far as I can tell they don't void achievements. If you go in to Assist Mode from any menu there are a multitude of options that make the game easier.
1. Longer Time Limits (useful to get medals easier)
2. Objects Disappear on delivery (useful as the moving truck won't get full so fast)
3. Reduced difficulty (not sure exactly what this does, the in game text reads "Reduces the difficulty by removing dangers or slowing down elements" May be there are further obstacles I haven't encountered yet like fires or something.)
4. Skip Level on Fail. (I didn't turn this one on yet)
5. Lighter 2P items. (in game text says 2P items are easier to carry for 1 player.