As a free to play player, you just have to make the best use of all resources you have.
In this case, you have to find where/how to use common and uncommon survivors to your advantage.
There’s something to be considered here, since you are likely going to have excessive grade A level up item.
On top of that, it’s just fun, trying to find uses to something that most people don’t use.
Today, I would like to play with Ema.
Ema is an ranged attacker with a unique ability to increase her damage output as “time passes” – this means X number of hits against enemy and (since one of the more recent patch) after a kill.
This damage bonus is 100% (or double) every level up, so at the maximum, she has the ability to pump out 4x it’s base damage. On top of that, what they don’t tell you, is that she gets AOE after the first level. My level 19 Ema is able to hit at 1606 points of damage per round. Pretty impressive.
So, where and how do you use her?
I see her strength as a high damage output ranged AOE. This for me means mainly Special assault.
Team setup is mainly tank/Ema/support, but it pays to be a little patient in the beginning to let her level up in battle before deplying more DPS.
I currently have her badged as HP type, but if you are confident that she won’t die, then having her as DPS built should be ok as well.
I really enjoy using her and I think you should give it a shot too.
Happy hunting.