UMH - Umbral Master Hammer
You will be able to survive with UMH on Walls, but it will be necessary to use Ultimate Health Potion or even Supreme Health Potion. Depends on what do you want - UMH will give you the best damage and the best EXP/h but it will lower your profit. To feel safest you would need to use Mace of Destruction (lower EXP, better profit and safety). You can also try something in the middle, Hammer of Destruction.
If you decide to use UMH, you make imbuing for critical and mana leech. Other weapons have 3 slots, so you can fill it with life leech.
Other equipment (based on that, that falcon items are out of question):
Gnome Shield (fire protection imbued)
Cobra Hood with mana leech and skill imbued (eventually Zaoan helmet with mana leech or Demon Helmet with mana leech and skill imbued)
Fabulous or Ornate Legs
Ornate Chestplate (if you don't feel safe, imbue it with fire protection)
Use also plasma ring and amulet, and if it will get dangerous, put on prismatic ring and werewolf amulet.
This should make you feel good solo on walls. I hope I could help!