Level 2-4-3 is the first Advanced level of Ancient Egypt in Plants vs. Zombies Online. It is a "Wall-nut Bowling" level, in which the player will play a Wall-nut Bowling level and get their points subtracted if a zombie trample the flowers or when the player use the Wall-nuts, and get their points increased when they hit many targets at once with a single Wall-nut. The player can only plant to the left of the flowers. The player will be ranked with other online players by points and the 1st, 2nd and 3rd ranked players will get huge prizes weekly.
The tombstones can block the player's Wall-nut and the Desert Death Zombies in the final wave can summon quicksand to boost zombies, increasing the difficulty. Along with huge amount of zombies in the final wave, the player could easily end up with tons of zombies coming to his/her house with full of tombstones blocking their space.
Grave Buster is given in the level to "bust" the tombstones on the left side of the flowers, but the number of Tomb Raiser Zombies are increased much more than the normal mode. Even though the Grave Buster cannot be eaten in the game, it will be not that easy to act quick with the zombie horde in the final wave.
Try to destroy the tombstones first. Then destroy the zombies. Aim for the zombies that are the closest to the flowers, the toughest zombies, Tomb Raiser Zombies and especially Desert Death Zombie.
Tomb Raiser Zombies will summon tombstones to block your space planting Wall-nuts. Use Wall-nuts themselves or Grave Busters to remove the tombstones quickly.