Here is the full list of all 33 Mido and Di achievements.
Buy all the upgrades for ice weapon
Buy all the upgrades for shock wave weapon
Collect 10000 coins
Clear all levels
Clean a level by killing all the zombies with freezing them
Clean all the waves in museum
Clean all the waves in greenhouse
Clean all the waves in office
Clean all the waves in store
Clean all the waves in gallery
Clean all the waves in basketball court
Collect 2500 coins
Clean all the waves in coffee shop
Clean all the waves in gym
Clean all the waves in soccer court
Clean all the waves in restaurant
Clean all the waves in server room
Buy all the upgrades for fire weapon
Clean all the waves in classroom
Clean all the waves in storages
Clean a level by killing all the zombies with the fire weapon
Clean all the waves in stage
Clean all the waves in warehouse
Upgrade fire weapon twice
Clean all the waves in library
Upgrade ice weapon twice
Clean a level by killing all the zombies with the shock wave weapon
Clean all the waves in Mido's room
Upgrade shock wave weapon twice
Upgrade ice weapon once
Upgrade shock wave weapon once
Upgrade fire weapon once
Collect 250 coins