Megacrit bingo build
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This is not a farming build, just fun thing to try. If you have a good ancestor module with crit damage and toxin or fusion power boost ratio then you can try your luck in the leaderboards in the next few remaining days.
Build explanation:
Reload Wave of Light and shoot the ground to proc hyperfocus, switch to Secret Garden and start using skill 1 to get stacks of pest control.
Grapple high in the air and use site intrusion to approach his base in the ceiling, tag him with skill 1 to proc defense neutralization and toxic chain catalyst then use skill 4 up to two times.
Depending on your ancestor module, less than 3 seconds is possible if you score four to five crits on the first laser pass.
Only thing that matters on the guns is the passive, no need to build them.