Tight circle
The cheapest edge in the game is a disciplined circle. It dodges more than any HP stat and keeps your weapons firing the whole time. Do it constantly.
Read the tell
Bosses and shooter fans telegraph. Watch the wind-up, not the count. A read tell is worth more than a farmed level. Bosses appear on a fixed timer (mini-boss every 2 min, main boss every 10 min), so you can pre-plan your loadout to be ready.
Use collabs to open a slot
Two max-level weapons can fuse into a Collab, which frees an inventory slot so you can grab an extra weapon or item for coverage. A Super Collab fuses a collab with an item for an even stronger effect. See weapon synergy for the pairing logic.
One goal per run
Survive, level, and pick coverage. Do not chase every orb into a bullet field. A focused run beats a greedy one that ends early.