I've played almost 100 runs, and two of them have been ended by a pitfall trap. On one hand, its existence helps keep SPD a punishing, unforgiving game in the Rogue-like tradition, but on the other, instant death is always frustrating. What are others' opinions?
I haven't really had issues with that trap, and they seem to only begin to appear during the caves.
There's a number of things you can do to deal with a pitfall trap once you've activated it:
potion of levitation
stone of teleport
spell of feather fall
hour glass
chains
scroll of teleportation
the enhanced scroll of teleportation
the special spell that allows you to teleport, but also be stunned (forgot the name).
wand of repulsion (assuming a sufficient enough level)
Other things you can do to minimize damage:
Healing potion (ignoring if you have pharmacopoeia)
Potions of shielding (ignoring if you have pharmacopoeia)
cleansing potion (to remove the bleed damage after the fall)
The purity related seed (to remove the bleed damage, and assuming seeds work for your run)
Any shielding ability from talents or sub class talents.
I'm uncertain whether I've died to the trap because usually i likely have a potion of levitation, feather fall, or any teleportation based items. I usually play with at least 6 challenges, but more recently with 9 challenges. I've played at least 700 runs, maybe 1,000 (switched phones several times)
Spell is phase shift, I can also think of Ally swap or any other ability which allows jumping or teleporting, such as Assassin's reach, Smoke Bomb, Heroic leap, some duelist weapon abilities etc.