Hischier also added assists on Switzerland's sixth and seventh goals against Italy.
The 20-year-old now leads all New Jersey Devils at the World Championship with his three points.
Next: Switzerland are back on the ice on Sunday at 2:15 p.m. EDT against Latvia.
FINLAND 4, SLOVAKIA 2
Slovakia: Marian StudenicFinland: Kaapo Kakko
Kaapo Kakko is the youngest player on the Finnish roster at the World Championship, but he certainly isn't playing like one.
Kakko, fresh off a two-goal appearance in Finland's opening game against Canada, one-upped himself in his second game at the 2019 Worlds.
The 18-year-old completed the hat trick with the empty netter for Finland against Slovakia in a 4-2 victory.
Kakko scored the 2-2 equalizer, the 3-2 game winner and the empty-netter as the Finns remain undefeated through two games.
Watch: FIN-SVK highlights
In the opening two games, Finland coaches have trusted Kakko and put him on the ice in the dying moments of the game to protect a one-goal lead.
Devils prospect Marian Studenic who is on Slovakia's roster, had an assist on Slovakia's second goal, that tied the two teams at two at the 9:20 mark of the second period. Studenic has two assists through two games.
Next: Finland return to the ice on Monday, May 13th, against the United States at 10:15 a.m. EDT. It's a marquee matchup between the two players projected to go 1-2 at the upcoming NHL Entry Draft with Kakko and USA's Jack Hughes going head-to-head.
Slovakia also returns to the ice on Monday, they face Team Canada at 2:15 p.m. EDT.
