Change Costumes:
If you want your character to look different, then complete the game and then start a new game. Remember to save before starting a new game. You will now see a "Normal/Special" option. Select the special option you will be shown in a panda suit.

Different gaunlets:
You will get a better shiny gauntlet when you collect 20,000 souls

Gold gauntlet:
Get 50,000 souls to unlock it

More souls:
wait for the enemy to attack and counter it with the thunder sword because this is the fastest so when you kill it it will release more souls

Final battle made easy:
When you are battling fortinbras hit him with the fire magic and his body will fall to the ground then kick him about 6 times then use your thunder orb keep doing this to beat him easily

Super arrows:
Enhance your arrows using the fire orb to turn your arrows into fire ones

Dark realm entrance 2:
There is a room where the man whom lets you into the dark realm appears it's in the keep on the 2nd left

Kaede outfit:
Get an S ranking at the end of the game to unlock a second costume for Kaede