Crit-based build's best die

It's the Bullet Thanks to the 'Bullet Clone Synthesis' upgrade, this guy can practically be used like a summon. Even so, its damage is high, so you can get through the early to mid-game without other dice. However, it becomes useless trash in the late game, so I don't recommend it for clearing. I used a crit-based build with Bullet, Summon, Adaptation, and two other crit dice. You could probably replace Summon with something like Growth, but personally, Growth felt sluggish, so I went with Summon.