Item description:

- Slayer and Beast Master: you're at the 5th floor. Find and kill the final boss. Beast mode is activated so you will get both trophies.

- Gunsmith: after killing the final boss destroy the skull and grab the item. After that find the gunsmith in the same floor
and she will craft the bullet. Remember to pick it.

- Lion Leap: After getting the bullet go to the final boss room and keep going ahead until you are in another zone with giant
floating bullets that you have to jump to advance. Just fall, you won't die.

- Time paradox: After killing the marine's past there is a rather easy boss fight. If you die you'll get this trophy but you
will have to load the save file again and repeat everything you did before.

- Squad Captain: Kill the boss when you are in the past.