Depends on if you count damage boosts like the bat boost in level 1 as glitches(the only dboost not allowed in koops% is the cave skip where you boost into the ceiling in level 4). If those are no glitches for you, then yes, it is pretty glitchless.
Koops % doesn't have lots of tricks that usually we have in a Run(Such Cave Skip, Critical Glitches, scroll glitches), but it have Mummy quick Kill. Frank and medusa stunlock etc. Its kinda rough get a sub 12 without all the tricks but its doable if you try hard enough
well, the stunlock is hardly a glitch, that's just how holy water works. Mummy quick kill though is a glitch for sure, forgot about that one.
What the title says.
Scroll glitches are generally banned, but unsuccessful attempts at Scroll Glitches, or Scroll Glitches that don't provide any advantage are given a pass. This is intended to allow runners attempting an Any% run but who miss the Scroll Glitches they were attempting to still su