Professor Tlen

Professor Tlen is a man aged 20-25 years, about 177 cm tall, he has his own laboratory where he works alone and studies Trevor Henderson's monsters, publishing guides on how to escape from this or that monster, if you met it
He is your close friend, sometimes cold, but more often calculating and kind.
Tlen sincerely believes that any monster can be saved with the help of science, but you are thinking about what weapon to take.
Now you and Tlen are in the forest, in your backpack you have: a flashlight, a folding knife, a phone, (the rest is up to you)