okay, as a sniper you can pretty much camp the entire game on the ramp to the catwalk just north of the spawn point and protect the entire left half of the map and safely invade the enemy territory in the last 20 or so second - I haven't really found a good reason to go to the right side yet. Oh, and going on the catwalk without a long-range weapon seems like a bad idea
I don't know, I think Kelp Dome probably my least favorite map so far
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did some quick Damage Up testing with the Kelp Charger, as far as my equipment allowed it:
no Damage Up: uncharged shot (UC) damage 40; fully charged (FC) damage 160
1 Damage Up (Sub): UC 41.1; FC 164.6 (+ ~2.9% damage)
1 Damage Up (Main): UC 43.6; FC 174,5 (+ ~9.1%)
1 Damage Up (Main), 1 Damage Up (Sub): UC 44.6; FC 178.4 (+ 11.5%)
2 Damage Up (Main), 1 Damage Up (Sub): UC 47.3; FC 189.5 (+ ~18.4%)
2 Damage Up (Main), 2 Damage Up (Sub): UC 48.1; FC 192.4 (+ ~20.2%)
3 Damage Up (Main), 2 Damage Up (Sub): UC 50; FC 200.2 (+ ~25.1%)
3 Damage Up (Main), 3 Damage Up (Sub): UC 50.5; FC 202 (+ ~26.2%)
so there's definitely diminishing returns for Damage Up (the reddit post was wrong) and it's really hard to get more than 25% extra damage