Mash Kyrielight level 25, Marie Antionette level 20, Mata Hari level 16, Jing Ke level 12, Kiyohime level 30, Nursery Rhyme level 23, Frankenstein level 23, Medusa level 16, ushiwakamaru level 15, and Boudica level 11
Focus on Mash, Cu Chulainn, Hans and David.
Marie Antoinette need to be ascended at least once to unlock her best skill and Siegfried is average.
Use your friends' servant to help you as you are a new player and your servants are still underleveled.
Offense: Hans, Cu Chulainn or Ushiwakamaru, Support servant(probably something with class advantage most of the time)
EXP Farming: Hans, Arash or Spartacus, Support servant with a starting NP craft essence and an AoE noble phantasm.
Use a Craft essence that gives Arash or Spartacus and starting NP such as Dragon's Meridian and Kaleidoscope. Try to charge the NP of anyone else than Hans so they can use their NP's to clear waves of enemies, Hans is just there to provide more Arts cards for the other two servants and make it easier to charge their NP's.
Also, I second what Squall10 said, focus on leveling those servants, Hans and David are really useful support in tough battles. and If you haven't played the first singularity yet then I suggest leveling Jing Ke or Hassan of the Hundred Personas aswell, because they have class advantage most of the time there.
If you didn't know, extra copies of servants can be used to increase the NP level, max NP level is 5.
After leveling the servants recommended by others, I recommend leveling:
-Eric: balanced zerk between offence and survival
-Mozart: focusing on Arts buff skill. IMO, the best Art buff that everyone has access to (Tamamo doesn't count cuz she's super rare)
I'll add more
Raise Mata Hari, she is a HEAVY debuffer, right now she can fire up to 60% def down to your enemy, a number worths 3 Zhuge Liang's attack buffs. After rank up later, she will gain another 20% def down, raising her debuff number to 80% def down, also she got the skill seal debuff for your enemy, very useful in hard fights where the enemies keep spamming buffs or evade skills. Also she comes with unreliable charms, but you can ignore them, her main worth is the heavy def down, not the charm.
