the crime scene might be a paper mario reference because in certain versions of the game there is a silhouette of a toad surrounded by some other stuff (i think it might be like papers or blood or something idk my memory is a bit fuzzy and i dont remember what it was very well)
I beated in duo you need spam hot dog with teamate then place wizard and spectre then buildfence and spikes use ability when hot dog will be close to jester
from the future I am here to say to get the hazmat accel u need to get 750k damage on accelerator, beat hardcore 2 times with accelerator, get 70k damage on accel in one match and one more quest which I forgot
El goblino with crusifix does like 10% of the bosses or enemies damage. With spectre it's now 20%, and since jester will do 3x damage when it's health is half, and now you can one shot this boss with just a crusifix since it deals 50% of the enemies/bosses health