HI, it 's my firt solution on TA. :)
For this achievement, It must be in Section testing. YOU need the empty jar in the house and green blood slug available at the grocery store.
Retrieve the slug blood with the jar and then towards the level " Urban " . you Head to the park.
Shoot the giant mushroom, and A Time This - this income, use slug blood on it . It will become red and harmful. It remains to be killed by the gases of the fungus.