Full list of all 18 Mowin' & Throwin' achievements worth 1,000 gamerscore. It takes around 0.5-1 hour to unlock all of the achievements on Xbox One.
Throw a rock at another gnome and stun it.
Pickup two gas cans while boosting.
Stun your teammate by throwing an item at them.
Mow 100% of your lawn before time runs out.
Boost the mower off the edge of a lawn.
Get a tie game.
Be the victim of a 6 second stun lock.
Get stunned by a falling care package.
Dig up a fertilizer that is less than a second away from exploding.
Play a game where a gnome recieves a gold end game trophy in all categories.
Knock a fertilizer out of a gnome's hand by throwing a fertilizer at them.
Have three thrown fertilizers simultaneously counting down on your rival's yard.
"Accidently" push your teammate off the edge of a lawn with the mower.
Come back and win a match after being behind by 20%.
Win in the last 5 seconds of a match after being behind.
Knock a gnome off of a level by hitting them with an item.
Walk off the edge of a lawn while affected by the Hypno Shroom spores.
Finish a match on every level in the game.