Level 11

You don't need a bonus but the growth bonus makes it a bit easier

1. Open the sarcophagus
2. Pick lemons and grapes
3. Pay right trader 1000 gold
4. Pick available fruit
5. Trade 500 stone for gold with trader on the left
6. Buy camel
7. Chase 2 crocodiles
8. Open the chest
9. Build a quarry
10. Build the bridge for 1000 stones
11. Build market and trade 1000 stones for 4000 gold
12. Make enough stone to do 5 trades in total plus an 500 stones then demolish the quarry and build 2nd market
13. Stop picking fruit when tree goal is met
14. Clear last nomad for 8000 nomad

Level 12

1. Pick grapes
2. Open sarcophagus and chest
3. Send 3 workers to mine and then fill when you get extra workers from the sarcophagus
4. Buy the elephant
5. Build 2 palaces
6. Build a market and make small trades
7. Build a bank
8. 2 more palaces and upgrade
9. Demolish quarry after 4 palaces are upgraded and with about 3000 stone in stock
10. Demolish bank when bank goal is made
11. Build 2 more palaces and upgrade

Level 13

It's possible to do this without a bonus, but if you need one use the growth bonus

1. Trade 1000 stone for 2000 gold at the top right trader
2. Trade 500 stone for 1000 gold at the top left trader
3. Open 2 chests
4. Trade gold for stone with the 3 other traders
5. Plant 2 almond trees as soon as you have 2000 stone
6. Shake thieves and pick almonds
7. Pay 2 nomads 10000 gold each

Level 14 

Use the speed bonus if you can't finish in time

1. Open 2 chests
2. Build bridge
3. Open the sarcophagus
4. Pay the nomad blocking chests and open them
5. Build the next bridge
6. Pay the nomad blocking the mine
7. Staff the mine
8. Open the sarcophagus  (you can get it)
9. Trade stone for gold
10. Build a quarry and make stone to total 1150
11. Demolish and build market
12. Trade stone for gold

Level 15

1. Open sarcophagi with grass for extra workers
2. Open sarcophagi at the left end of the bottom row, the left end of the next row up, and the 2nd and 3rd from the left on the top row
3. Build bridge
4. Pick lemon

Level 16

1. Buy the elephant
2. Pick fruit and clear the rock blocking the bank
3. Chase the crocodile
4. Staff mine
5. Pick fruit
6. Demolish quarry
7. Trade 1000 gold for 1000 stone at bottom left
8. Build 3 palaces and upgrade twice
9. Clear nomad on right for 2000 gold
10. Build 4th palace and upgrade twice
11. Demolish apple trees and plant 2 almond trees
12. Upgrade 4 palaces again

Level 17

1. Pick grapes (3 times)
2. Open chest
3. Buy camel
4. Build the bridge to palace
5. Chase crocodile
6. Open sarcophagus and chest
7. Make 350 stone
8. Build bridge to market
9. Make 800 stone at a time
10. Trade 900 stones
11. Build bridge to bottom
12. Plant grapes and open chest
13. Trade 2 more times with 1000 stone
14. Build top bridge
15. Pay nomad 10,000 gold and chase last crocodile

Level 18

1. Pick grapes throughout
2. Pay nomad
3. Clear stone and open 2 sarcophagi
4. Trade 1000 gold for stone from the next trader
5. Send 4 workers to mine
6. Upgrade the palace
7. Buy the elephant
8. Hire a worker and send to mine
9. Build bridge for 5000 stone
10. Unstaff stone mine and send to gold deposit
11. Open chest

Level 19

1. Trade 500 gold for stone
2. Open the chest
3. Build top and bottom bridges
4. Pay nomad 1000 gold
5. Pick grapes twice
6. Trade 1000 gold for stone at bottom trader
7. Staff the gold deposit
8. Upgrade the palace twice
9. Buy elephant
10. Build quarry and make 2000 stone twice
11. Build the left middle and bottom bridges for 1000 stone each
12. Open the 2 sarcophagi
13. Build the left top bridge for 1000 stone
14. Build the right middle bridge for 500 stone

Level 20

1. Pick grapes throughout until goal is met
2. Trade stone for gold
3. Plant grapes
4. Buy the camel and chase the crocodile
5. Open the chest
6. Plant grapes whenever you have 500 stone
7. Build quarry
8. Fill all plots with grapes
9. Build bridge for 2000 stone
10. Stop picking grape when tree goal is met and wait for joy