Choosing the right starter Champion
Athel, Elhain, Galek, Kael These are the starter champions you have to pick from at the beginning of your Raid Shadow Legends journey. If you are looking for a champion that will last you a long time choose either Athel or Kael as their skillset are good in most situations. Either way, you can always replace your starter champion when you get a better champion from various means.
Familiarize yourself with the Affinity system
There are four types of Affinities in RAID: Shadow Legends, and you’ll need to understand them all in order to succeed. Three Affinities exist in balance with one another, while the fourth offers no particular advantages or disadvantages against the others.
Magic (Blue): Beats Spirit (Green), weak to Force (Red);
Spirit (Green): Beats Force (Red), weak to Magic (Blue);
Force (Red): Beats Magic (Blue), weak to Spirit (Green);
bottomline Void (Purple): No counter, no weakness.
Once you have a firm understanding on how this system works, it will be easier for you to fight in the campaigns / dungeons and even in the Arena's.
Working through Campaigns
Work your way through the campaigns, follow the campaign missions 
. By doing this, it will give you a further understanding of how all the games systems work which in turn will help you progress to the next level of gaming.
There’s a lot to be found in the Raid: Shadow Legends campaign, and even more for players to unlock through gameplay.
Whether you continually revisit the same story section to grind up your squad’s strength or advance along the critical path to resolving the world’s mysteries and dangers, learning the game and your Champions’ potential at the campaign’s natural pace can pay off handily.
Also, equipping your Champions with gear from the campaign will make it easier to advance farther in the dungeons to earn even better gear. As such, it’s actually best to simply ignore the dungeons until you’ve nearly completed the campaign.
What’s the greatest advantage to putting in some grind time on campaign or dungeon missions? Loot drops. Many missions often include a top-tier, low-percentage drop for you to hunt down. Don’t give up on them, even if you don’t earn those rare champs right away. If you have the Energy to spare, grinding for experience and rare drops can be well worth your effort.
Equip your Champions with full gear sets
The gear system in RAID: Shadow Legends makes it crucial for players to equip the proper set of tools for the job. Savvy players will choose specific Champions to load up with certain gear. Equipping tank-type Champions with HP-boosting gear or ensuring the “squishy” Champions have more life-stealing items equipped can make a huge difference in battle.
Upgrade your gear often
In order to make all the gear you collect even more powerful, you can upgrade each item to a maximum level of +16. As you level up items, you’ll unlock bonus stats for every four stages you upgrade. This system makes even common items worth investing your coins into. If you keep grinding as we suggest, you should see some pretty awesome item drops in no time.
In the early game, you probably don’t want to upgrade gear beyond +12. The upgrade process becomes quite expensive as equipment gains levels, so you’ll be wasting precious resources by sinking too much Silver into gear that will soon be outclassed by new loot. Also note that Gloves, Chest Armor, Boots, Rings, Amulets, and Banners can have multiple primary stats. You will want to take care to farm for gear that has the correct primary stats, not just the correct set bonus.
Look at the Champions available in the campaign Several Champions can drop as rewards once you complete certain campaign stages, and many of them can be very helpful in some of the game’s trickier areas. If you’re struggling with a particular quest or battle, look to see which Champions might be available to you in the campaign. One of them could be just the addition you need to put your army over the top! You can see which Champions drop in a chapter by looking at the loot screen to the left side of the screen when you open a chapter.
Rank up low-rarity Champions
When ranking up a Champion, you’ll need to sacrifice other Champions of the same rank. However, take care not to rush. If you get rid of Champions you may want or need later, you’ll regret it. Instead, level up lower-ranked Champions and use them as sacrifices instead such as the common champions that you get from opening mystery shards! Using those common champions(food) is the best way of upgrading the star value of your preferred champion.
Don’t horde duplicate Champions
Over the course of your journey through RAID: Shadow Legends, you will earn plenty of Champions as rewards and unlocks. Many of these will be repeats of Champions you’ve already earned. This means you should feel free to use most (if not all) of your duplicates in the Tavern in order to upgrade the ones you’ve chosen as your favorites. It’s important, however, to keep some powerful Champions from a variety of factions for use in the Faction Wars and Tag Team Arena game modes.
Don’t forget to login once a day
Other than grinding, the best way to gather materials and unlock items is by ensuring you collect login bonuses. Newer players will also be granted some pretty impressive Champions as rewards for logging in consistently. Rewards like these are handed out daily, so be sure to launch RAID: Shadow Legends each day for an easy boost in materials and more.
Don’t get too far ahead of yourself
Players of all kinds often want to unlock every game type and adventure as soon as possible, but certain aspects of RAID: Shadow Legends are locked behind level caps. This may seem frustrating at first, but it’s by design. The goal in keeping content locked based on the player’s level is to help them become more comfortable with the game’s systems by the time advanced adventures become available. The trials of opening up the game’s many experiences will also help in leveling your Champions, ensuring you have some capable core pieces as you get to more difficult scenarios.
Don’t leave home without a healer
This may sound like “Role-Playing 101,” but you’ll definitely want to add a healer to your party as soon as you’re able to unlock one. (Handily, there’s a rare Champion with healing—Warpriest—who automatically drops once you finish Chapter 1.) Having a healer on hand to mend your party’s wounds will often save the day. The Support class Champions in RAID: Shadow Legends range from straight healers, to Champions with the ability to raise deceased allies, to Champions who are focused on buffing your team and debuffing the enemy.
Don’t forget your Aura
Certain Champions possess a passive skilled called an “Aura” which will increase a specific stat for every Champion on the team. Only the champion in the “Leader” position of the team will be able to project their Aura in combat. Make sure that your Leader always has an Aura! Each of the starter Champions have Auras, so be sure to put them to good use.
Faction Wars
Be sure to do these every day to acquire the glyphs and Forge materials to help increase the power of your champions. Do not use the Glyphs on junk artifacts, save them for when you have artifacts with good stats. This will save you a headache later on down the road.
Joining a Clan
Once you think you have a handle on how the game operates, you might want to look into joining up with a clan. There are a few benefits by doing so, such as attacking the clan boss and getting reward boxes, clan activity box when clan activity hits 90, experienced player that can help guide you with what champions / artifacts are good or bad.