IPA: /ˌʌnəˈsɪstɪd/
KK: /ʌnəˈsɪstɪd/
Not having help or support from others; done by oneself.
She completed the project unassisted, showing her independence and skills.
Unassisted → It is formed from "un-" (meaning not) and "assistere" (meaning to assist or help). The word describes a state of not being helped or supported by others.
Think of 'not' ('un-') being 'helped' ('assistere') — that's why unassisted means not receiving help.