Here is a good way of skill tree I have thought of based on my days here. Blue Heroes will be used mostly for their Expedition skills, so you shall upgrade always the 2nd skill ( Gathering Speed ) BLUE HEROES
- Smith 2nd skill for Iron Gathering ( Most important )
- Eugene 2nd skill for Wood Gathering ( 2nd important / Most important in Alliance Mobilization event )
- Cloris 2nd skill for Meat Gathering ( 4th important, Most important in Alliance Mobilization event )
- Charlie 2nd skill for Coal Gathering ( 3rd important, 2nd important in Alliance Mobilization event )
After finishing these 4 skills, I’d go:
- Smith 1st skill for Iron Output
- Eugene 1st skill for Wood Output
- Charlie 1st skill for Coal Output
- Cloris 1st skill for Meat Output
In the end the battle-skills (Exploration) should go like that:
- Charlie 2nd skill then Charlie 1st skill
- Smith 2nd skill then Smith 1st skill
- Cloris 1st skill then Cloris 2nd skill
- Eugene 1st skill then Eugene 2nd skill
For Purple is a bit complex depending on your purpose and what you will change in late game. Here is how I do: PURPLE HEROES Expedition Skills
- Gina 1st skill ( MUST TO MAX )
- Sergey 2nd skill ( defensive )
- Sergey 1st skill ( defensive )
- Jessie 1st skill ( offensive )
- Jessie 2nd skill ( defensive ) — only because it’s better to have a maxed hero than having 2 different heroes just 1 skill maxed
- Gina 2nd skill
- Bahiti/Patrick won’t make MAIN Team. ( Patrick has a slightly chance )
Exploration Skills
- Gina 1st skill ( MUST TO MAX, main dealer )
- Sergey 2nd skill ( MUT TO MAX, main defensive skill )
- Sergey 3rd skill ( Defensive > Offensive )
- Gina 2nd skill ( Attack speed on dealer )
- Sergey 1st skill ( Damage on your tank )
- Gina 3rd skill ( maxing Gina )
- Jessie 1st skill ( decimating enemy front-line )
- Jessie 3rd skill
- Jessie 2nd skill
- Bahiti/Patrick won’t make MAIN Team. ( Patrick has a slightly chance )
As for gold heroes, I own just Molly & Zinman, and Molly is way more stronger than him.
GOLD HEROES
Expedition Skills
1. Molly 3rd skill ( grant permanent bonus for team )
2. Molly 1st skill ( stun chance > damage )
3. Molly 2nd skill
4. Zinman 1st skill ( Reducing time of constructing is best )
5. Zinman 3rd skill ( For PvP purpose )
6. Zinman 2nd skill ( it is kinda uselss reducing cost building )
Exploration Skills
1. Molly 1st skill ( obviously you need her skill to do damage )
2. Molly 2nd skill ( you want higher damage constantly )
3. Molly 3rd skill ( gaining attack speed on lower hp is not worth than 2nd skill with permanent damage )
4. Zinman 1st skill ( need damage for his skill )
5. Zinman 3rd skill ( You need attack speed since he’s in backrow )
6. Zinman 2nd skill ( defense boost is OP, but since he’s backline it doesn’t help that much )
Probably you can swap 4 & 6 on Zinman ( Exploration Skills ) if you put him in frontline, but I do not have any experience yet and I do not recommend now.
WhyBnaditWhy have a colour-based overview and analysis on the various tabs in here:
Although the skills are listed out so you can make your own choices
https://docs.google.com/spreadsheets/d/1kKpVCctr-j2B5DAXLtTeypwdYm5VoiRqatGeu_tk5j8/edit?usp=sharing