What artifacts should you upgrade and get from the shop in Invincible Guarding The Globe? Good question with quite some consequences when you look how long it takes and how much effort and resources goes into an artifact, right?
I see so many players simply put everything into the artifacts they have but please take your time and rather stockpile up artifact XP and ait for the good artifacts than blindly upgrading any artifact! They have very different impact and worth waiting can go a long way here.
Although I have specific artifact recommendations linked in my tier list for Invincible GTG here, what are in general the artifacts that you really should invest in? Below you find my general ranking that should give you a pretty good idea about that.
Tier SA perfect attacker artifact, no matter what. depends a bit from team to team but overall always a good bang.
Tier SIncredibly strong support hero artifact.
Tier SYou get this when you start and it is actually pretty good for your tank or other melee heroes - and you always have a hero in your team that can make good use of it!.
Tier A+Funny that no hero directly wants to carry it as it won't enhance attack or defense or healing, but you WANT TO HAVE this artifact as it will make your heroes use their skills so much more frequently! Works on every her, too, so if you have any open slot you can run it.
Tier A+A couple heroes make really strong use of it, espcially Robot and we all know how well he support pretty much all teams.
Tier AIncredible artifact for all melee support and attacker, with a few exceptions that have skills that pop below 20% HP then you don't want that!.
Tier AGreat artifact for a couple heroes where it really works well.
Tier ACan be sometimes more and sometimes less depending on your team setup but one of the best defense stats artifact on your defenders.
Tier ATHE healer artifact to enhance healing effects.
Tier B+Great emergency healing although the artifact doesn't enhance the wearer specifically, on your support heroes a good fit and an artifact you want to have active in yours etup for sure.
Tier BGreat against human setups and you really see the effect when popping skills before enemies. But only works against human enemies.
Tier BGood against certain setups but also like other debuffing artifacts in Invincible Guarding The Globe situational.
Tier BNot that great as you want it on a hero that has good defense stats but they all can use better artifacts. More a fall back honestly.
Tier BSituational depending on your team setup how much it does.
Tier C+Great boost for the whole team for any ranged hero but also some melee ones that will face your team a lot. Rangers are always the better choice and gives a significant stat boost. With where the meta was going this isn't really used anywhere that much anymore.
Conclusion
I really hope this list helps you to avoid major mistakes with your artifacts and if you want more specific info what artifact works best on what hero, just check out the above mentioned tier list that has them linked.