These "errors" are fun you know? I also found out that you only need DETERMINATION to exist in this world and those weird... melted monsters gave me enough to exist for a good while. And with your determination in my power things will be may easier.
Determination is a very powerful human soul trait. Determination can easily beat all soul traits (Including FEAR, but victory isn't always guaranteed). If the user is very determined, they can do anything they want, until they have lost their trait.
The souls of those who possess determination as a soul trait will be red. All the bearers of a determination soul have brown hair with the exact same hair style and red eyes (except Chara on the end of Season 1). Both Frisk and Chara wear sweaters with a stripe on the middle while Copper wears an armor.
Powers and Abilities
Ha ha ha ha... You naive idiot. Do you think you are the only one with that power? The power to reshape the world... Purely by your own determination. The ability to play God! The ability to "SAVE." I thought I was the only one with that power. But... I can't SAVE anymore. Apparently YOUR desires for this world override MINE. Well well. Enjoy that power while you can. I'll be watching.
The more determined the user becomes, the more chance they have of using these abilities.
DETERMINATION Weapons: If the user desires so, they can create a sword and shield made of Determination.
But it refused: If the user dies during battle, this ability will repair the user's shattered soul right away and allow them to return to battle with max HP. To be able to do this the user needs to be over-determined.
Regeneration: It's unknown that how this ability works, but with this ability, HP can be regenerated during battle, and it's seen that this ability is used by Frisk (on Love Part 2) and Undyne the Undying (on Love Part 1)
Decimal HP : The HP of a determination soul will turn into decimals when getting attacked, asymptotically approaching 0. It was seen Frisk used this ability in The Game when Frisk was fighting against to Asriel's GOD of Hyperdeath form.
Dagger of Souls : This doesn't apply to a determination soul, but focuses on the determination of other soul traits. One example of this is when Chara took the extracted determination from the souls of the 6 fallen children. On example of this is in Your Best Friend, when Chara fights Flowey, Sans, Gaster.
Rhabdophobia Resistance: FEAR has a special attack named "Rhabdophobia" which steals the magical attack of the opponent and uses it against them. DETERMINATION however has the ability to resist getting controlled by Rhabdophobia.
My determination and power right now are bigger than ever... and I finally have enough to create this... (Chara creates ERASE button)
ERASE: Pressing the ERASE button will permanently delete the entire timeline, this means the end of the glitches. Everything will be erased and nothing will remain.
LV/LOVE: (According to Sans, LV is a "Level of Violence") LV is a thing that is registered in the user's “profile”. After collecting the necessary EXPs, the user's LV increases one by one, HP, AT and DF will increase as each LV increases. The emotions and feelings of the user will start to disappear, making it even easier to kill someone. LV20 is enough to ERASE the existence of a world.
EXP: (According to Sans, EXP is a "execution points") EXP is a execution point that can be collected by killing someone. When the user reaches enough execution points, it causes LV to increase to a higher level.
RESET: Everything will be reset to a certain point and new timeline will be created.
SAVE and LOAD: Time can be reversed by LOADING to the last saved position / "checkpoint" by the user, and no one will remember what happened before the reload.
What Camila Cuevas Said About Determination
It is the rarest out of all seven traits.
It is unclear if there’s a specific gap of time for a Determination soul to “spawn”.
This trait is extremely powerful and has unknown limits.
Determination is so powerful that it can defeat godlike entities. (If they can reach certain standards)
Frisk's determination and Chara's determination are very different.
Before Sans's soul got taken by Bete on the "Dust" episode, Sans got filled with a little Determination. Therefore, Sans's second blue eye opened and he got enough power to be able to teleport in front of Asriel.
Frisk was able to use the "but it refused" ability, but it's going to be difficult.
Undyne and Sans are examples of monsters who were able to create their own Determination.
Determination is resistant to FEAR's Rhabdophobia ability.
Determination can be used for good or evil purposes, depending on the owner., meaning Determination doesn't have a negative counterpart.
Copper Lightvale is not able to SAVE, manipulate the timeline, and use other timeline manipulation abilities.
Determination trait users can make a sort of armor made of Determination around their body.
According to Camila, Frisk was the only character who can collect LV/EXP and use the save file. (Excluding Flowey.)
Determination souls can easily make a magical weapon if they desire to do so. As long as they're determined to pursue a goal their magic will be boosted by their desires. 
Determination Souls are the perfect balance and combination of all traits (which is why it's so rare).