First, he dropped LSD and DMT together.
Then he mutilated his hand smashing all of his dishes.
He falls down several times, most likely injuring himself each time.
He pulls out his eyelashes.
He amputates his own right hand.
He somehow creates a gaping wound in his abdomen.
He apparently pulls out both of his own eyeballs from their sockets, rendering himself completely blind.
He then apparently tries to break open his own skull, "reaching" for his brain. Most likely he self-induces many skull fractures and concussions.
Due to severe cranial trauma and exanguination, he dies.