Die by hitting 20 walls

Destroy 30 Hay Bails

Kill yourself by eating your chain over 10 times

Destroy 20 Hedges

Disarm 50 mines (naturally or using Bomb Proof perk)

Get blown up more than 50 times

Collect over 50 coins on a level

Collect over 100 coins on a level

Create an undead conga of more than 50 zombies

Create an undead conga of more than 100 zombies

Create an undead conga of more than 150 zombies

Create an undead conga of more than 200 zombies

Create an undead conga of more than 250 zombies