So I have worked on making the loot assets for the game, using Blender. I used to be a 3DS MAX person, but the thing takes too much space on my small SSD for my needs and Blender can do practically everything that 3DS MAX can. And Blender is completely free. Not much to lose there.

There are 3 types of loot that you can find in my game, health potions, resurrection potions and a single key, the Soul Key, that lets you pass through the Soul Gate to reach the next level.

The health potion, which gives you back health points:

The resurrection potion, which brings you back to life instantly if you die and do not have to restart the level:

The Soul Key:

The other thing is a credit loot, gold bars (probably the easiest thing to model, only have to find the gold texture to go with it). I am planning on making a store level after each completed level so the player can buy stuff with it.

Hmmm shiny gold bars... 

The gold pickup particle system is a simple particle system that I made in UE4 with a translucent emissive gold colored material, also made in UE4. 

Well that is it. All that remains is to randomize the loot spawning so that the player can pickup more than one type of loot. And also assign keyboard input or an inventory system so that the player can use it.