Funnily enough a couple years ago I thought this game was too hard and let an old friend 1cc it without me. After gaining more experience I realized this game is super generous and gives extends like crazy. It lets you take multiple hits because your lives are more like a quart of lives. You have a heat gauge that rises and once you get red shot your score increases but the damage is minimal. Red shot is pretty good for score, it's so good that the last mid boss will legit give you 4 mill giving you 4 extends at once if you kill it with red shot.
Lets not get it twisted though Ridam is the easier shot type because she allows you to not only use ur lock on homing missles but she also has a dodge input if you tap → ← or ← → . Seg has a punch that cancels bullets and damages the enemy for big damage but his input isnt as useful as its more like an uncontrollable dodge input →→←←.
This game is made by reverse snare, a doujin shmup dev that is a pretty cool dude. I saw he was working on a game called magical blaster back in 2022 but it has yet to release. I hope he's doing well.