Currently as I understand, I have to hit every EP boss from lvl 1-7 once to get 1/5 of it done. Why is it such a hassle just for a quicker activation if a semi-ok perk? At least it should've been 2-3 times, not 5.
Here are some ideas instead.
•Damage a EP boss 5 seconds from its death. 8X
•Complete wave 7 with a fireteam of 2 others having Wordling Zero. 2X
•'Disarm' 20 rituals while having Worldline Zero equipped
•Kill 30 mini boss acolytes
If 'nerfing' the catalyst objective isn't an option, maybe buffing or changing the catalyst perk is better. Having the spin attack last 0.3-0.4 seconds more would be cool.