Don't sleep on the blood boomerang

Just finished the game, decided to finish off the roads and five star the rest of the shelters. Finally got to unlock Mr. Impossible, and had to sneak my way through a BT infested area. However, I'd just finished the game, and I'd set out without any weapons.

Luckily, I had just the thing I needed - my blood boomerang.

I dont know how it would've faired without the upgrade from the >!Aeronautical Engineer!<, but even at half load, a headshot was sending BTs back to their beach no problem. Three fully loaded shots sent one of the giant BTs packing without them even triggering against me. I was shocked. Why hadn't I been using this the whole game??

Since I had literally nothing on my person, i had to rely on munching down cryptobiotes to maintain my blood levels, but since I'd collected hundreds during my 150+ hour playthrough, that was no problem.

Use the blood boomerang! It'll make your life a lot easier.