I have an i9-13900 and an rtx4080. With less than two minutes to go in the first level, the game suddenly became incredibly laggy and unplayable.

Another dev using the dumbest description for the genre ever conceived. Its Survivor-like, or Survival Rogue-like, or even Roguelike Arena Survival. Passing on this because Bullet Heaven is not what this is and is a term only fitting for maybe a shmup.

i want to exclude whip because going to that from circle ruined my dps but i don't know how on controller

Uhm i'm not sure if i understand it correctly: - i select one of the 3 start skills, which looks "ok" to me - i spam mutate and hope for the best?

And i like it so far even tho i dont know WTF im doing yet. I am guessing that we have 3 spells in case your mutations one one goes really badly? And how do you know what is a good mutation or whatever, just time and experience? I feel like i am having to level up so fast on the fly by hitting spacebar, that i do not even know what im getting really at all but i suppose it will click with me soon....