ngl second phase was really difficult for me too, it's what took me the longest to learn not 100% sure, but move towards the left and focus on going up through the spread, then once past that focus going downwards
i dont remember quite clearly because of the amount of time its been, but you can use the trello here trello.com/b/AmwCo6gu/arknights-acg-operation-trello
the boss rush (im assuming ur talking abt it) rewards a badge which'll possibly give smth in nicks randomizer but for the token itself, no. you get it from killing the hurteffect dummy and it'll drop once dead use illumina for most dmg and you'll be able to kill it in roughly 10 minutes for the first token