Richard Fussell has billed the Ospreys' Heineken Cup clash with Northampton Saints as a "do or die" encounter.
The Swansea-based region crashed to a opening defeat to Leinster at the Liberty Stadium on Saturday.
And Fussell admits the Ospreys must triumph at Franklin's Gardens to keep any hopes of reaching the knockout stages alive.
"It is do or die," said Fussell.
"Going away from home, we might be the underdogs - who knows? - but we have to go up there to win.
"It is early days, but we've both lost and so it is fair to say it's a do-or-die situation.
"We have to put our best performance out there and hopefully come away with a win."
The Swansea-based region have failed to cross the whitewash in their last two encounters.
Fussell admits the try-drought is concerning but insists it is not a major issue and one that can be resolved.
"I just don't think our attack has turned up," said Fussell.
"We lost our way and we lost our shape - I can't say why. We had a great build-up and were ready to go. But on the day little things didn't go our way.
"It was frustrating, but there's no one person to blame. It was a team issue rather than an individual one and we all have to put it right.
"Not scoring tries over our last two games isn't really a concern, because in the two matches prior to that we scored 12. It's something we can put right and we will put right for this weekend."
But Fussell is under no illusions of the challenge the Ospreys face from George North and company at Franklin's Gardens.
"It's going to be a tough old day at the office because Northampton are no mugs: they're a quality outfit in the Aviva Premiership and have been tipped to win this competition or at least make the last four," added Fussell.
"We don't come across English clubs very often, so in that sense it's kind of unknown territory for us. They all fit the same mould in that they are big, physical, confrontational guys, and you just have to match that.
"Northampton also have quality backs, having made good signings, with George and Kahn (Fotuali'i)."
Wales captain Sam Warburton is impressed by the effort the squad has put in over the past couple of months and says Saturday's win against Ireland was a massive boost to the squad as they prepare for the World Cup.
WRU TV follows Wales' RWC training squad on day one of their camp in North Wales. The squad were greeted to an official welcome in Colwyn Bay and then headed for an afternoon of team building at ZipWorld
Actor and Millennium Stadium Tour Guide Gareth Bale has been performing his one-man play about Wales rugby legend Ray Gravell across Wales. He chats to WRU TV before taking his show to the Edinburgh Festival.
Wales Sevens head coach Gareth Williams is delighted with his selection as assistant coach to Simor Amor for the men's programme ahead of the Rio 2016 Olympics Games. WRU TV's Graeme Gillespie gathers his reaction.
Newport Gwent Dragons kick-started their season by winning a major trophy as they shocked all the big names in the Aviva Premiership by becoming the first Welsh winners of the Singha 7s at the Twickenham Stoop.
Principality Building Society has joined forces with the Welsh Rugby Union to offer every club in Wales the opportunity to reward their most cherished volunteers with tickets for Wales' Dove Men Test clash with Italy at the Millennium Stadium next weekend, Saturday 5th September 2015 (5.00pm).