I MIGHT NOT NEED THIS TROPHY GUIDE

To get the "I might not need this" and achievement in game, you need to do a complete walkthrough without using any herbs or First Aid Spray, only the one to get rid of the parasite the first one is allowed.

The easiest way to do this is to buy both the "Defence Coins" and "Recovery Coins" from the shop, this'll help a lot if you do any mistakes (like I did in my run) and you get hit by some enemies.

You can also add the Rocket Launcher to the run to make things even easier and faster, that's app to you.

For a complete walkthrough check the video below: