I'm actually playing it (I love comics, they are huge part of my childhood) and combat is good, fluid and become fun after you get new characters and abilities for them. Battles are the best part of the game imo and it's a shame they got burried under this games needless system bloat. Game really captures comic book feel right and it shows that in combat even more. Spideys taunts, Blades edginess, Stranges both magical and surgical stuff kind of things done well. Getting a comic book cover with your team after every combat is cherry on top. But some covers are borderline in uncanny valley.
Dunno why they used card system at all, cards are just some basic ability pool to choose from. They probably wanted to eliminate "to hit" RNG altogether but I'm not conviced this was the way.
Game got a huge hub for between battle stuff, researching, base building, bonding with heroes and such. It got nice secrets for exploring but also got braindead grinding stuff like petting the dog, bantering with other heroes in most cringe ways. This part becomes friendship sim really fast with pointless talking and gifting and hanging out with heroes. Who doesn't want to go to picnic with Blade! (he doesn't...) Needless timesink.
Most cutscenes are just boring at best and there are a lot of them. Kojima will be jealous.
There is a light side, dark side dialogue choosing stuff, resulting in different skills and gears for Hunter (MC) but still not an RPG.
Upgrading cards is kinda nice, every hero got their own gimmick about cards and that adds a nice replayability, since party size only limited to 3 (BOOOOOOOOOOOOO)
Technically this is one of the worst games I played. Looks like an PS3 era game and plays like it. Graphics style is beyond bad. I played better looking, much older Eurojank games. There are stutters and bugs everywhere. Combats look and sounds good with every hero being unique. As I said they captured the comic book feel right and that shows most in combat. Captain Marvels and Ironmans screen clearing stuff are powerful and you feel them while Dr.Strange is mostly support with card upgrades and heroic points. Our MC, Hunter, can go any way you want, tank, support or damage. Light is better for support Dark is better for damage, wow big suprise there!
Basically Troubleshooter and Knights Tale are better games, just play them instead of this one if you are not into comic book stuff.