With an orange sea of supporters in party merch filling Melbourne's Crown conference centre on Saturday, candidates stormed the stage to AC/DC's Thunderstruck.
Outside, there was a heavy police presence to meet protesters as they descended upon the launch.
Select media were permitted to attend, with ABC and SBS reporters notably absent.
Northern Metropolitan candidate Mark Nicholson opened the proceedings with the declaration Victoria would become Australia's toughest state on crime should his party have a say.
One Nation is promising to boost police resources, slash paperwork and deal more harshly with repeat offenders.
The announcements were listed in the party's 63-page policy outline but uncosted. It says it intends paying for promises by cutting Victoria's suburban rail loop and First Nations treaty.
Mr Nicholson also vowed former premiers Daniel Andrews and Jacinta Allan would be "in prison by Christmas" if One Nation comes to office.
"Corruption thrives in darkness folks and we are going to turn on the lights," he proclaimed.
Victorian state president Warren Pickering and federal leader Pauline Hanson both received roars from the 750-strong gathering.
"This is our moment, let's show the rest of Australia, what a One Nation government can do," Mr Pickering said.
The party also pledges to build three new magistrate courts, establish a 24/7 bail court and publicly list every bail decision.
One in three Victorians rate crime a top issue and higher than any other state, according to the latest Mood of the Nation report by public affairs consultancy SEC Newgate.
The polling found voters nominated the coalition as best placed to manage crime and community safety, compared with 16 per cent for Labor, with 19 per cent selecting One Nation.
Senator Hanson declared no seat in the state safe, adding that real change was here.
"Victorians gave this government their trust, and in return, you've been cheated, lied to and treated like mugs," she said.
Offstage, there was no shortage of merchandise on sale including T-shirts and caps emblazoned with the slogan "MAGA Make Albo Go Away".
All the party's Victorian candidates were in attendance, including Bruce Whalley, who is running as the party's Bundoora candidate.
The Melbourne tram driver told AAP he felt sick about the level of debt the state was facing.
"We had to all suffer a COVID lockdown and now we're looking at the largest debt that my grandchildren will have to worry about," he said.
"That troubles me a lot. Another term of Labor, from a small business point of view, will bankrupt the state."
Activists declared their intention to protest in the lead-up to Saturday.
In the pouring rain outside, spokeswoman Julie Monteiro told AAP it was concerning to see people turn to figures like Senator Hanson.
"We are seeing this rise of popularity of Hanson and One Nation and people are treating her like a legitimate political party," she said.
"We want to make it very clear Hanson is racist, One Nation is racist and we won't stand for any kind of ... racist policies."
Saturday marked the first major test for Mr Pickering, who faced intense scrutiny after admitting to taking speed, ecstasy and marijuana before joining the Australian Defence Force in his 20s.
During a heated press conference last month, the state leader said his past was littered with "mistakes" but insisted he was the right person for the job.
His admissions came after The Australian published a series of allegations raised by his former partner.
He was unavailable to speak with media following the campaign launch.
The latest Resolve Political Monitor published by Nine Newspapers shows Labor's primary vote steady at 25 per cent, the coalition up one point to 27 per cent and One Nation still at 23 per cent.
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