Sorry about necroing it, but was out of the game for 2 years. He is probably done with items.
I did it with Discreet Louise and Fatso Fargann for the Water resist to MAYBE help with added effect decrease(Didn't look like it). Plus those are my favorite jugs. Louise is a BEAST!
His only biggie is the chainspell breakga and added effect poison(Worst). I would say DG/RR/MC are your best bet. You need the RR for the added DD. Thinking if you do it in the daytime, sacrifice the MC for Sea Daughter(More hp regen in day but slow 5%) and help with damage with Bora Axe(Safe) or run up and Rampage + snarl.
Did Zeta's(5 used swapped pet @5%) and made sure to buy healing salve 1/2 and clear salve 1/2 for emergencies. Later on the poison will tic down fast so make sure you watch it and try to DD faster.
Tunga was fairly easy solo, but /war would be harder for red only because if hate changes, you are left defenseless and it hurts. Next time ill just bring my wife as Nin/war to proc red.
Gear was Aalak's axe/Guillichard+2/Spurrer/Moepapa/Ferine necklace/Ferine Legs+1/Mirke(+15acc/att). Used a pretty good reward setup and zeta's are pretty cheap. No Mulsums used.