Sol Invictus

Strategy
Spiking Them Slowly Strategy

The Spiking Them Slowly strategy will show you how to earn the Plants vs. Zombies Last Stand Sol Invictus Achievement with 2000 suns remaining after 5 flags.

Select Lily Pads, Snow Peas, Coffee Beans, Magnet-schrooms, Flume-shrooms, Gloom-shrooms, Garlic, Spikeweeds. That will leave 1 alternate plant, if you have 9 slots. Choose Scaredy-shrooms or Squashes as insurance only. They are not necessary to win or earn the achievement.

Plant Roles

4 Snow Peas slow the zombies as they walk the 2 Gloom-shroom/ 5 Spikeweed gauntlet or advance in the pool, maximizing zombie damage and carnage. 2 consecutive Garlics are needed in the 2 lanes next to the pool to steer zombies down the outside paths, serve as backup, and repulse Pole Vaulting Zombies into the correct row. 2 Magnet-shrooms are all that are needed! It may look sparse and relatively unprotected, but as long as you replace the eaten Garlics quickly, you don't need to worry about the largest waves.

Replace the Garlic when Eaten

thumb|300px|rightThis bare-bones strategy wins the Sol Invitus Achievement with 2200 suns and there is very little wiggle room for any deviations or extra plants. It is critical that you be vigilant about replacing the Garlic when eaten, and only when the plant is completey gone. Do not get distracted with collecting coins, and do not replace the Garlic with the shovel or you may lose valuable seconds. If a zombie gets to the Gloom-shrooms, you may lose.

Largest threat is the Jack-in-the-Box Zombie if it manages to explode. Since this method leaves you with up to 200 extra suns, you can use Squashes (4 total) as your alternate plant for the last 2 flag onslaughts only.

Alternate Strategy: The list of plants to choose is Lily Pad, Repeater, Torchwood, Magnet-shroom, Coffee Bean, Garlic, Tall-nut, Tangle Kelp, and Squash. However, 2,000 sun are required when the fifth flag finished not every end of a flag. You get 250 suns after each flag. The build: .    .     .     .     .     .     M     G     G          R     R     T. .    .     .     .     .          R[L]. T[L] TN[L]. .    .     .     .          R[L]. T[L] TN[L]. .    .     .     .          R     R     T. .    .     .     .     .          .     .     .     .     .     .     M     G     G


 * 1) The consecutive Garlics are for the Pole Vaulting Zombies. This will keep them away from eating your Magnet-shrooms which are very important by the way. Keep the Tall Nuts away as possible from the last row so that they would be destroyed immediately.
 * 2) Just replace the Garlics when eaten.
 * 3) As you continue and gain more sun, add two other Repeaters and two Magnet-shrooms. The final arrangement of plants is shown below.
 * 4) You can use the Tangle Kelp and Squash for emergency. :)