Strategy documentation for Protect the crystal , may update with other resources in the future.
Strategies
Zoning
In the game there are two important structures that have no defence against enemies, at least directly, those being farms and barracks, Since the 3 spawn update and the fact air strikers spawn all over the map this presents a big problem, since they are large objects and hard to contain within bases often leaving them exposed to attack.
The solution?
Zoning.
This is the process by which you camp one spawn and defend the cyristal to create a relatively safe ‘Zone’ (Shown in diagram below) in which it is convenient to place these towers.
It is also worth noting that on wave 10 (Wave 8 on hard) Air strikers can start attacking this zone from the side, however this is solved by setting up an outpost (Wall with Tesla and regen behind it) on both exposed sides.
This is a critical strategy to beating hard and helps significantly with beating easy and medium.
Spawn camping
Spawn camping is the process by which you cover a spawn with defences, stopping enemies from progressing anywhere near the crystal, this can be useful in many scenarios such as:
- Stopping build up of enemies
- Reducing pressure off lower skilled players protecting the crystal
- Zoning (See above)
- Maximising damage output in your base
Optimisations:
- Have a BETTY at the tip (If on easy or medium) to quickly incinerate enemies, this is effective since most enemies spawn within or close to BETTY range.
- Order your spawn camp with lowest range towers at the front (such as alchemist) and higher range towers at the back, this way you can maximise your damage output, ensuring the success of the camp
- Have some barracks behind the spawn camp in medium and hard, this will help push back spitfires and block rocketeer shots
- Have a symmetrical spawn camp, Once again this helps maximise damage output and is just more aesthetically pleasing and easy to replicate in the future.
How to beat difficulties
Medium
–Part 1–
Spawn camp one spawn (my preference is top right but top left works too), doesnt matter how i reccomend a zombie combo tho.
Use the space behind as a safe space to set up 10-15 farms (remember to add teslas for wave 10)
–Part 2–
Have 1-2 people dedicated to keeping spawn alive while this spawn camp and farms are set up, ballistas + robo bullys do alright at this job
– Part 3–
After your farms are set up create 10-20 barracks behind the farms where its also protected from the two uncamped spawns, these soldiers will then just push back spitfires / take out rocketeers till you win