I tried to hybrid with orb/firewall and that didn't work, guys in hell simply move way too fast. The way to find out yourself is to save skill points then gradually add them to fireball in hell until your damage is to your liking. I can't imagine unsynergized fireball would be useful even in 2 player but I've never used it so I'll defer to wiser souls.
Supposedly orb/meteor hybrids work but I would think you need a lot of skillers to be effective in multiplayer.
I've also heard orb/hydra is the way to go. It doesn't do much damage as long as it beats their regen rate hydra seems like it would be safest.
One thing to consider would be to max static and let the merc handle the rest. Pokey mercs are brutes with the right gear (reaper's toll). I assume your main attack will be orb so you have a lot of points to play with.
one build possibility (in order of skill placement):
1 warmth
1 tk
1 teleport
20 orb
10 cold mastery
20 ice bolt
20 static
prereqs to eshield
1 eshield
20 tk
edited: instead of adding skills to eshield find an orb that has it and keep it on your switch. You can save yourself 4 skill points that you can add to warmth or max tk faster
Supposedly orb/meteor hybrids work but I would think you need a lot of skillers to be effective in multiplayer.
I've also heard orb/hydra is the way to go. It doesn't do much damage as long as it beats their regen rate hydra seems like it would be safest.
One thing to consider would be to max static and let the merc handle the rest. Pokey mercs are brutes with the right gear (reaper's toll). I assume your main attack will be orb so you have a lot of points to play with.
one build possibility (in order of skill placement):
1 warmth
1 tk
1 teleport
20 orb
10 cold mastery
20 ice bolt
20 static
prereqs to eshield
1 eshield
20 tk
edited: instead of adding skills to eshield find an orb that has it and keep it on your switch. You can save yourself 4 skill points that you can add to warmth or max tk faster
Step 2: Acquire and train a monkey. This step may take some time.