Re: [Com2us's] Soccer Spirits
I would say to just go through the story line as far as you can then do the missions that you unlock afterward. Each story segment gave you 5 crystals for beating the 3 teams. Then you can do the 3 missions which generally involve beating them again with using a special shot among other things that takes 2 or 3 matches to finish them all giving you gold, crystals and friend points. The starting character you receive is enough to satisfy most of these requirements.
In a perfect world, you want to have at least one character that can do a long pass in your back line. Generally an assist type has that skill. I would not suggest using a 2 star player ever, but there are a decent number of 3 star characters that are fairly easily obtained and can perform a long pass. Ideally, you would want to have another assist type character in each line that is capable of a pass so that it is alot easier to break through the enemy lines as it were.
For example, my mid line is Nari, Valkyria Beth, and Lillith. When Nari gets the ball, ideally she passes it to one of the other two (depending on who has an attribute advantage or just Lillith by default most times). This adds 500 to the penetration attempt and basically steamrolls whatever was in the way at the cost of 1 bar.
The same principle applies in the attacking area as well. Get the ball to your passer, use their ability to pass to the "attacker" and let it fly with a special shot.
Restricting myself to using only 3 star characters, which should be easily obtainable either through normal play or scouting for the most part, I would have this lineup.
Front: Passer, Starter player, Any (preferrably one that gives a bonus to all in the line
Mid: Passer, Leader, Attacker
Back: Attacker, Defender, Long Passer (if you do not have an attacker or someone that can break through, go with someone that gives you a bonus to the line)
Goalie: Mute or Estella (anyone that has attribute bonus for GK position is fine otherwise but I think they are the best at 3 stars)
Your Ace should be whomever gives your team the most overall benefit. I left it vague because I cannot control what comes up in scouting any better than the next person. Look at what pops up and see if there is something that fits what you need.
Also having a few powerful friends with good attacker cards will help you with events.