Kill 50 enemies in a row with inventory weapons without losing health. (6)

For some reason the requirements for this trophy are glitched. When going for this I was shot alot of times and almost died on a few occasions but I still managed to get it. There are a few things I still recommend:

1. Use Assault Rifles Or Sub-Machine Guns They will kill the enemies faster and easier meaning there is less risk of you being shot first. And aim for the head, this will see the enemy lose health much quicker.

2. Dont Be Afraid To Hide If you are being shot then quickly move away and hide behind a building or some other form of cover, this just allows you to regenerate your health.

3. Know Where The Health Packs Are As long as you know where one or a few are located then you can stand near them. Then if there is any risk of you dying or if you are badly wounded you can easily pick one up and get full health back again.

There is one easy way to know if your chain of invincible kills is still going or if it has been broken. Every 5 kills you will get a notification at the top of your screen, for example it may say Perfect Combo: 5 then as you go on it will say Perfect Combo: 30 etc. Just get to Perfect Combo: 50 & the trophy is yours.