Since I am pretty new, last event was the first one, I could really participate.
If I recall correctly, there was a specific color, which the enemy monsters could riposte. So it was a good option to double a strong color and skip the weak color.
Is this always the case in events? Is it the same color for the whole event? (cannot remember last time in detail)
Which color is strong / weak for upcoming guardian event?
Purple was the last reflecting color, yellow would be probably the next one.
As a general rule, leave in the bench heroes with the reflecting color is always a wise choice, with some small exception. (some people like to run Wu kong the same, using mana potions rather then tiles to charge him)
Double the strong color (in this case purple) may or not may be the best choice depending the stage you are fighting.
If it happen to run in many red opponents just saying, having 2 blues may be better then 2 purple.
Sadly, minor monsters has 2 predefinited color for each stage, but can spawn at random quantity everytime (while the boss stage is always the same)
So sometimes an asset that would be perfect for a run it’s not the best if you repeat the same stage, because you can encounter 6 of the same color and none of the other.
Changing, repeating, strategy, a good bench and a bit of luck are the key to do a good score
There are ten different levels with different mixes of minions and bosses. Guardians (unlike the other events) has the same color minions on every level: yellow and green. It has two yellow bosses, two red bosses, and a purple boss. Leaving your yellow heroes on the bench is good advice except for the levels with the purple boss, Panther, at the end, you might want some yellow. Or not–Panther’s special has a massive shield against yellow.
If you have a hero that doesn’t have an offensive special, you can absolutely use them, IF you’re careful about gem cascades. I’ve used Wu in guardians the first time around and my sons used Sabina quite effectively to help them complete intermediate Pirates the last time around.