MAJOR:
Mana issues early on: Without mana, you’re just a big melee
creep. In the early game, you want to
spam Quill Spray a lot, but you’re limited by the low mana pool and regen. That
also makes mana burners very effective against Bristle.
Bad stats: We’re talking about
low STR, STR gain, AGI, AGI gain, INT, Base Attack Time and starting speed. In fact, the only good thing is high INT gain. As
a result, the hero hits slow, doesn’t have much HP and Armor and relies on his
abilities and some core items to be effective.
MINOR:
Not effective against high armor heroes: Bristle deals only physical damage and his
source of armor reduction is pretty weak,
which means his DPS is reduced
significantly by armor. The good thing is that the enemy team can’t have only
high-armor heroes.
No disables, No nukes: Bristleback lacks any form of immediate threat
to the enemy. His damage increases gradually with time/stacks, as does his
disable - Nasal Goo’s slow.
Slow Farm: Quill Spray is not very effective for farming
creeps as it takes time to build-up and the hero is rather bad in hitting
creeps and neutrals. He can, however, farm Ancient stacks efficiently.