Needs some optimization work for sure.
Im writing this review at the first roadblock fight in the game, stage 15.
As mobile game go at some point the game will want you to stop progressing and grind, this game doesn't shy away from that as I can tell.
However, stage 15 SHOULDN'T actually be that much of a problem, garnered you have a better phone than that of I. I have been consistently crashing at the second phase of stage 15's boss due to the unnecessary amount of projectiles the boss fires, amounting to a laser of bullets.
Why can't this just be a laser? The lag from the amount of projectiles in this fight may as well remove all skill expression one could show with its dash/dodge mechanics. Its tank it or die with the input lag in these fights.
Until optimized I see no reason to play further.