Highly likely to certain to result in the deaths of the participants; dangerous or reckless to such a degree as to be tantamount to suicide for those taking part.
Likely to commit, or to attempt to commit, suicide.
Extremely reckless.
Pertaining to suicide.
Someone suicidal; someone likely to kill themselves.
Deadly or destructive.
Eager or quick to argue, fight or start a conflict.
Cruel or savage.
Defiant or uncompromising.