Humans shouting to make a loud buzzer/siren sound. This sound was used as the game over siren in older versions of the open source game trosnoth, and has been described by some as a "maniacal scream".
A glass bottle rolling on the floor of a parking lot. Loud noise from glass making contact with the ground as it rolls. Recorder with a zoom h6 and stereo microphone (rode ntg2). The sound was post-processed to decrease volume as it was too loud. Recorded this sound on a sunny afternoon at the open window institute.
Pure recording of a loud clap of thunder and the subsequent rumble. The initial crack is so loud and close that the recording volume is very low and catches almost no background sounds.
Three regular beeps of a smoke alarm, followed by one final slowly dying beep. Warning, this is super loud and ear-piercing compared to other sounds, turn your volume waaay down before testing out this sound.
I found a bunch of old broken tripods and random plastic pieces and slammed it on the floor as hard as i can, and then i added some distortion in audacity to give it that "punch" sound.