Castlevania LoS Kill 10 enemies being poisoned by spider attacks

Kill 10 enemies being poisoned - surprisingly, this one is one of the hardest challenges in the game on paladin. Spider can poison you in 3 ways. 1 - if he grabs you and you fail the QTE sequence. Its not optimal, because you lose A LOT of hp, like 60% of max, so it is only viable option for the challenge if spider grabs you on full health. 2 - he attacks you with special hit after cocooning you, BUT the attack is rather slow, because the game lets you to get out of the cocoon to dodge this attack (which is nice), but lesser lycans attack much faster and cocoon gets destroyed after you receive just 1 punch, so has no use for this trial. 3 - the counterattack is the most optimal option in the long run. Sometimes after receiving some hits, spider will go in block stance, receiving zero damage from your hits. If you attack him in that stance - he will execute an unblockable counter attack, that deals moderate damage and poisons you. The problem with counterattack - it is random, so it requires luck\grind, and if you dont hit the spider will exit the block stance rather quickly. Also lesser lycans sometimes can hit you and move out of range of the spider counter attack, which is very frustrating. DO NOT even try to attack lycans - they have very low base hp, and even spider can unintentionally kill some of them. After getting poisoned use daggers to kill as much lycans as possible (the goal is 5-6), then DO NOT kill the spider and leave the arena to the left, get to the autosave and restart from the checkpoint. Now new pack of 8 lycans will spawn with the spider, so you can reach 10 in 2 attempts supposedly.