The Control Layout are very similar to most mobile shooter like PUBG and the likes of it.
Combat system are very similar to PGR and Honkai Impact where every hit you does to your foes will fill up the Ultimate Gauge and the game played with 3 switchable character each with their own skill.
Story plot are very Generic for the sake of Generic, and this game Protagonist (you) are just yet another Faceless Jerk Male Protagonist with Amnesia being protected by a bunch of Girls with Super Power.
The game difficulty are fairly okay, the game are beatable with only 3 star weapon even on Hard difficulty, I very recommend to avoid using 5 star weapon as it takes away the intense and tension building feeling as you progressing through each wave of enemies.
The game does have some issues with bugs but it doesn't have a heavy impact on gameplay so far.
9/10