This is a guide to explain how to get below Special Game achievements in the Very Easy difficulty level.

• Brutal Force Only swordman can be hired.
  
• 25 Years You only survive for 25 years.
  
• M Only swordman and minotaurs can be hired.
  
• Dark Times Cannot build churches, +10% faith from battles.
  
• Pioneers Units are hired for free. Each building increases the cost of all buildings.
  
• Invasion of zombie chickens Zombie chickens attacks every 5 years.
  
• Plague All units lose 88% of health, healing don't work.
  
• Heroes You cannot hire more than 7 warriors.

Cost of Warriors


Scouting
Year 10 Poachers Camp Creatures: Archers x 3 Award: Free forester's hut
Year 20 Beast's den Creatures: Tiger x 1 Award: Tiger x 1
Year 20 Minotaurs' arena Creatures: Minotaurs x 2 Award: Faith +300
Year 30 Sinister Forest Creatures: Unicore x 2 Award: Wood 666
Year 30 Shrinking Shirne Creatures: Knight x 4 Druid x 1 Award: Scroll of Shirking
Year 40 Celestial Arena Creatures: Paladin x 9 Award: Angel x 1

Estimated Points
to unlock next Belief (no church)
150
358
621
1474
2249
3591

The final battle consists of 26 swordsmen 12 knight 10 militiaman, which means you need a minimum of 26+12x1.3+10 = 52 swordsmen.

In my example below, 64 swordsmen with no scroll of shirking, only 31 died, more than half of them survived after year 50's final battle.

Swordsmen will die often in year 45 - year 49, as their health is only 30. So you will need "savings" - sufficient cash on hand to patch up casualties. During the end game, the last five years, you will lose 20-30 swordsmen every other turn, so make sure you have 25k gold at Year 45.

To build an income of 5000+ coins per turn, you'll need 50+Peasants in T5 Town Hall, that means food level needs to be increased from 5 to 100, i.e. 3 cowsheds as early as possible: 3 x 30 turns = 90 food.

Related Beliefs:

• First two of the 5th column (Early Game Worth=0.5k-1.5k per turn. Revive 2, and hire 5 more peasants, equals to 1.5k additional coins every turn);
  
• First two of the 4th column (Mid Game Worth=7k. add 2Swordsmen = 1k, cost of Swordsmen reduce to 500, with 60+Swordsmen that's a saving of 6k coins);
  
• First four of the 2nd column (End Game Worth=1.1k per turn. Peasant mine 10% more gold, 10+gold for each unit, around the end game, this will bring 50 peasants x 100 gold x 10% + 60 Swordsmen x 10 gold = 1.1k each run) shirking also useful at the final battle.

If we start the Brutal Force game with Americans.

At year 5, 4 Peasants + 1 Swordsmen + Stable (x1) + Town hall (x1)

At year 10, 9 Peasants + 1 Swordsmen + Stable (x1) + Cowshed (x2) + Town hall (x1)

At year 15, 16 Peasants + 2 Swordsmen + Stable (x1) + Cowshed (x2) + Town hall (x2) + Church (x2) + Chicken farm (x1 free award from the Poachers Camp)
Unlocked the first of the 5th column Revive Belief.

At year 20, Invested in 3 Cowshed,27 Peasants + 4 Swordsmen
Unlocked the second of the 5th column 5 more peasants Belief.

At year 25, 37 Peasants + 12 Swordsmen
Unlocked the two of the 4th column 2 extra Swordsmen and reduce 100 cost Belief
Finished the Lost Mine, award of 3000 gold and Foggy Swamp

At year 30, Church (x4) Town hall (x5) Now you have 6k gold per turn, time to expand army size.
Unlocked the first belief of the 2nd column

At year 35, Barracks (x9) = 33 Swordsmen + 55 Peasants, 7k gold per turn.
Unlocked the first two of the 2nd column
To unlock the shirking in the Scouting Map

At year 35, Barracks (x13) = 52 Swordsmen + 55 Peasants, 7k gold per turn.

At year 40, from now on, try not to spend gold (purchase church, or do irrelevant scouting activities). It is time to hold onto the 7k income each turn, to build up a saving of 25k at year 45. Barracks (x14) = 56 Swordsmen

A year 45, preparing for continues tough battles at year 46, 47, 48 and 49, top up your Swordsmen number and keep it at 56.

At year 48, you should have another chance for Belief.
- If you don’t have scroll of shirking yet, pick the shirking.
- If you got shirking from Scouting already, pick the third belief in 4th column to increase Swordsmen dmg.

At year 50, prepare for the final battle. Spent all gold coins you have left all the way upto 64 Swordsmen.

64 swordsmen is good enough to fight the final battle without Scroll of Shirking, and more than half of your men will survive.

Overall: Only 25 years, and the final battle is Minotaur x 4 or druids x 4, which means you need to max both life and dmg using limited gold.
With limited time, this also means you only get 2 Belief to unlock, Tier 1 buildings, 10 peasants (stop upgrading Town Hall to Tier 2, it won't be fully utilized).
Best strategy is to get 1 Minotaur and 1 druid, and stock up archers and swordsmen.
Both druids and archers have low costs and high damage, Minotaur and mass army of swordsmen can protect the archers at the back.

Start with Americans
At year 5, 4 peasants, 1 knight
At year 10, 7 peasants, 1 knight, 1 archer
At year 15, 10 peasants, 1 knight, 3 archers, 1 hut
From now on, save up for Minotaur and druids. No more peasants.
Unlock Swordsmen Belief
At year 19, 1 Minotaur and 1 druid were added
This is a strong enough set up and can just roll next 4 days buying nothing.
At year 24, another belief unlocked, this one can reduce swordsmen cost to 500.
With 8k gold, 2 free swordsmen from the first Belief, you now can have a total of 12 swordsmen.
If using 8k to get another Minotaur, 4 druids will all targeting your Minotaur, one kill...the only way is to get lots of swordsmen.
My final battle setup is 10 peasants, 4 archers, 1 druids, 12 swordsmen, 2 knights, 1 Minotaur

The final battle has 5 militiamen, 30 swordsmen and 9 knights.
For Building, 1 stable, 3 cowshed, 2-3 Minotaur's maze, Tier 16 Barracks, Tier 5 Town hall

At year 5, 4 Peasants 1 Swordsmen 1 Hut
At year 12, 2 cowsheds, 10 peasants, 4 swordsmen, 2 Huts
At year 15, 3 cowsheds, 12 peasants, 4 swordsmen
Unlock first two of the 5th column (Early Game Worth=0.5k-1.5k per turn. Revive 2, and hire 5 more peasants, equals to 1.5k additional coins every turn),

At year 20, 23 Peasants, 4 Swordsmen, get ready for 1 Minotaur
At year 25, 35 Peasants, 8 Swordsmen, 1 Minotaur
Clear both Beast's den and Minotaur' Arena
Unlock first two of the 4th column (Mid Game Worth=7k. add 2 Swordsmen = 1k, cost of Swordsmen reduce to 500, with 60+Swordsmen that's a saving of 6k coins),

At year 30, 55 Peasants, 9 Swordsmen, 1 Minotaur, 5.7k gold per turn
Now stop buying more peasants, because the cost for another 10 peasants would be 15600+400x10=19600, and the return would be 100x10x19=19000.
Without church, you will unlock the swordsmen cost reduction at year 31.
5.7k per turn for the next 19 turns = 108k, equals to 6 Minotaur and 40 swordsmen.
minotaur-1 2,000 + 2,000 = 4,000
minotaur-2 4,000 + 2,000 = 6,000
minotaur-3 7,000 + 2,000 = 9,000
minotaur-4 11,000 + 2,000 = 13,000
minotaur-5 16,000 + 2,000 = 18,000
minotaur-6 22,000 + 2,000 = 24,000
Total cost 74,000
40 additional swordsmen (minimum to win the final battle) would cost 14.2k + 40*500=34.2k
However, around the end game, 15-25 swordsmen can die in one single battle, cost around 10k
Also if losing a Minotaur that need another 2k, so the strategy would be to have a minimum of 4 Minotaur, ideally 5 Minotaur.

At year 35, 55 Peasants, 8 Swordsmen, 4 Minotaur, plus 5.7k gold per turn
Get the shirking from Scouting map can cost you 2 Minotaur and 5 swordsmen =6.5k

At year 45, 55 Peasants, 48 Swordsmen, 5 Minotaur, plus 5.7k gold per turn
This is a good setup for the final battle. No need to expand the size of team further, just need to maintain the size of the team during the next five years of continuous battles.

At year 50, extra gold 23600, can buy additional 18 swordsmen, now you have 66 swordsmen and 5 Minotaur. The result is our side only lost 5 swordsman and 1 paladin (from Belief unlocked) and got resurrected.

Please reference to above - no churches were built.

The key is to solve the food shortage, buy expensive buildings first, and unlock all five Beliefs under the 5th column (revive, +5 peasants, paladin, peasants change sides, additional for each type).
1st Building 200% of original costs.
2nd Building 300% of original costs.
3rd Building 400% of original costs.
... a table of the original costs as below:

At year 25, there will be 100 zombie chickens (Life 10, Dmg 1-3), and at year 50, there will be 1000 zombie chickens.
So you need to put almost all golds into faith. I tried two identical setups except that one has paladin, one don't, and the one don’t have paladin loses. There are two ways to get paladins, and both of them requires early church.
Do NOT invest in woods, that will only lower the gold and faith, also archers at the back expose your healers at the front line.
Try to protect your paladin healers by having more than dozens of swordsmen.

Belief: 2nd column, all the way to scroll of shirking (it's okay if you didn’t get the shirking at the end).

At year 5, get a church, as early as possible.

At year 20, 30 peasants, get 2 churches, 2 cowshed that will give a good start.

At year 25, 2 paladin, 3 knight, 8 swordsmen, 1 Minotaur. This setup survived.

At year 35, there will be 2 chicken devils (Life 66, dmg 9-13) and 8 zombie chickens
8 swordsmen, 4 paladins, 3 knights, 2 Minotaur

At year 40, there will be 9 chicken devils (Life 66, dmg 9-13) and 36 zombie chickens
55 Peasants,16 swordsmen, 4 paladins, 6 knights, 4 Minotaur, 2 exorcists

At year 45, there will be 9 chicken devils (Life 66, dmg 9-13) and 50 zombie chickens
55 Peasants,24 swordsmen, 5 paladins, 6 knights, 4 Minotaur, 3 exorcists

At year 50, there will be 1000 zombie chickens
55 Peasants (did not use at the final battle), 40 swordsmen (20 survived), 6 paladins (2 survived), 9 knights (3 survived), 4 Minotaur (2 survived), 3 exorcists, 2 hydras (optional)

With above setup, without shirking and without militiamen, you can win the final battle easy, and get your achievement!

Place 9 archers and 2-3 druids at the back.
Use the Tree guard and Minotaurs in the front to stall time.

The short answer is 1 Tree guard, 3 Druids, 3 Minotaurs, 1 Hydras (Tree guard does not counted as one of the seven warriors).
Do not get archers - they stayed at the back, and very hard to be removed from the seven warriors.
Use peasants and swordsmen to fight till you can get your first Druid and minotaur.

Hope this guide may help you getting your achievements.

Happy Achievement Hunting!