i've finished half the weapons now. i've also lost 4 runs with dualies, all of them in the mid-late sections before the last boss. i realize there may be something i don't get, but they feel frustratingly awful. even without comparing to the obviously busted charger, i would still say they're F tier. reefslider is not good and the main weapon is just blatantly inferior to other ones in terms of damage per second and range. and it has no cleave. and it's not especially good at painting. and it's not like you get great ink efficiency for all that, and one roll doesn't feel like it's that strong of a defensive option when just strafing or backwalking can also escape most of the same things. although considering that the previous problems lead to you getting surrounded a lot it's not like i think it would be any easier with tetra rolls or something
and like, there's tons of ways to cut through the hordes in the endgame, but doing it while avoiding the actual powerful enemies is incredibly overwhelming with the level of offensive power you have. the bias toward lucky chain/lucky bombs leaves you very weak on level start and respawns, and the items that actually help against dangerous enemies are the rarest drops. given all that, i kinda feel like...the build is less important than just picking easier stages where you can't get surrounded by 3 enemy sources or snipers at once. so maybe after i finish the other 4 weapons i'll remember enough of those to make it a whole run without picking a level that's impossible. or i'll buy the damage. or maybe they'll rebalance the game so that there's actually some advantage to picking this weapon cause i just don't see it