Raiden V: Director's Cut (EP)

3 Endings are for beating stage 8 with different hit ratio (as in enemy destroyed). To be able to see how many enemies you have destroyed. Press to change percentage ratio (it's the 3rd one). To get the 3 endings. You must get 98% hit ratio, 90%-95% hit ratio and below 90% respectively.

Above 98%:

90%-95%:

Below 90%:

1 Ending is for finishing stage 6 route C. This should come naturally when working towards the Route Maniac trophy. See Route Maniac for more info. The game should end prematurely and get you a different ending.

2 Endings are for the TLB (True Last Boss) In order to reach TLB. Just upgrade all 3 weapons to Max (Level 10). This should give you the Bad Ending.

The Good ending is the most confusing one. I played on 2 accounts and still don't know the exact requirements. While many suggest the info below is the key for it to unlock. I personally didn't do all of it in one run but I unlocked everything just by playing through Chapter Select.

Requires you to get all Miklas, Sol's and Faries in one run. Also need to upgrade all 3 weapons to Max (Level 10) You can continue and difficulty doesn't matter, thus you can do this in Practice mode.