Hi there, not to discourage further answers, but you may be interested in these older threads on the question:

https://www.reddit.com/r/AskHistorians/comments/38wm3o/did_hitler_ever_personally_harm_or_kill_anyone/

https://www.reddit.com/r/AskHistorians/comments/5uuli7/did_hitler_ever_personally_witness_any_of_his/