Survival: Day (Hard) - Firepea Strategy

This strategy uses Gatling Peas and Torchwood in Survival: Day (Hard). Gatling Pea shoots four peas at a time and Torchwood doubles the damage. Each lane has three Gatling Peas and a Torchwood doing 24 times the damage of a pea at a time.

1st round (Flags 1-2)
Plants Start with 3 sunflowers. When the first zombie comes, use Potato Mine. When a zombie comes, plant a Repeater in that lane. Keep planting sunflowers at the two backmost columns and upgrade those in the first column to Twin Sunflowers. Plant Repeaters in the 3rd and 4th columns, also the 5th column if you have enough sun. Plant Torchwoods at column 6 with Pumpkins.
 * Sunflower
 * Twin Sunflower
 * Potato Mine
 * Repeater
 * Gatling Pea
 * Torchwood
 * Tall-nut
 * Squash
 * Cherry Bomb
 * Jalapeno

S - Sunflower

Ts - Twin Sunflower

R - Repeater

Gp - Gatling Pea

Tw - Torchwood

Tn - Tall-nut

Gs - Gloom Shroom

- Pumpkin

Sr - Spikerock

Sp - Split Pea

2nd round (Flags 3-4)
Upgrade all sunflowers to Twin Sunflowers, fill the 5th column with Repeaters, upgrade one in each lane to Gatling Peas, and plant Tall-nuts with Pumpkins at column 7.

3rd round (Flags 5-6)
Replace Sunflowers at column 2, rows 2&4 with Gloom-shrooms and plant pumpkins in the backmost column if there are Diggers. Alternatively, replace Tall-nuts with Split Peas. If there are Gargantuars, also plant pumpkins in the 3rd column to protect plants from Imps. Continue upgrading Repeaters to Gatling Peas. If there are vehicle zombies and/or Gargantuars, plant Spikerocks in the 8th column.

With Gloom-shrooms: With Split Peas:

(Ts) Ts (Gp) Gp R (Tw) (Sp) Sr -

(Ts) Ts (Gp) Gp R (Tw) (Sp) Sr -

(Ts) Ts (Gp) Gp R (Tw) (Sp) Sr -

(Ts) Ts (Gp) Gp R (Tw) (Sp) Sr -

(Ts) Ts (Gp) Gp R (Tw) (Sp) Sr -

4th - 5th round (Flags 7-10)
Continue upgrading Repeaters to Gatling Peas.

With Gloom-shrooms:

(Ts) Ts (Gp) Gp Gp (Tw) (Sp) Sr -

(Ts) Ts (Gp) Gp Gp (Tw) (Sp) Sr -

(Ts) Ts (Gp) Gp Gp (Tw) (Sp) Sr -

(Ts) Ts (Gp) Gp Gp (Tw) (Sp) Sr -

(Ts) Ts (Gp) Gp Gp (Tw) (Sp) Sr -