Determination

Determination is used to buy characters that are related or similar to regular characters, they can be more powerful, have different attacks, and have a different designs. Regular characters are bought with soul.

some normal characters have a dt button. if you click on it, you will be sent to a room with all of that characters dt versions.

you MUST have the regular character and all the previous dt character before you can use one (for example lb sans phase three requires the first phase which costs soul and the second phase which also costs dt.)

Dusttrust phantom papyrus costs soul, however he counts as a dt character because hes in the dt room and required dusttrust phase 1 and 2.