His national team, Canada, travel to Teplice first on Saturday to take on the in-form Czech Republic before heading to Dublin to tackle the Republic of Ireland on Tuesday. It will be the first time Canada has faced either country at senior level.
The Canadian set-up is in a state of slight limbo at the moment following the resignational of coach Holger Osieck at the beginning of September and his assistant Colin Miller is in temporary charge.
"They are not looking easy ones right now," said Lars of the forthcoming games. "We are still trying to get ourselves together and don't have a coach right now. He resigned - it just didn't work out between the players and him.
"I think it is just a case of the players getting used to playing together again.
"It won't be easy and it will be a tough couple of days. We've got qualifiers coming up for the World Cup and we must find our form. The games will be good for us and we'll definitely be put under pressure."
Lars Hirschfeld is preparing himself for a seriously testing international double-header beginning this weekend.