Captain William Porterfield has demanded that Ireland display their true colours when they take on England in the ICC World Twenty20 on Tuesday.
His comments come after the Irish were bowled out for a tournament record low of 68 in their opening match against West Indies last Friday night, having earlier restricted the hosts to 138-9.
The Irish skipper is now demanding a much improved performance against England in their final group game at the Guyana National Stadium.
He said: "We are better than that. We know we're better than that and that's why it was a really disappointing show, that second half on Friday.
"We know ourselves, everyone knows we're better than that and so we've got to go out and prove that.
"This is a one-off game, like a play-off, to get into the Super Eights and I think we've just got to go out there and give it our all.
"If we do that and go out and enjoy our cricket and take some of that pressure off then I'll think we'll put on a better performance."
In the defeat to the West Indies, the Irish lost their first three wickets for eight balls and then four after 12 balls, and Porterfield has called for more patience from his side.
He said: "We can't go about changing a lot at this stage but it's a matter of just getting back to basics.
"It's knowing there's still time to play a few balls and get ourselves in. We came out and played a lot of shots and made a lot of mistakes early doors so we've really got to cut out those mistakes and realise we have got time.
"We came out after the first rain break and needed 120 in 18 overs but we were three down.
"So that was what set us on the back foot. We need to keep those wickets in hand and maintain at least the scoring rate, especially when you're chasing 130-odd.
"I think we need to have that bit more patience and be a bit more cricket-smart."
Porterfield added the game against England would hold no fears for his team.
"I think the belief has built up over the last couple of years that no matter who play against, if we got out there and play to our potential and do the things we want to do and follow the plans we want to execute then we'll give anyone a run," he said.
"The lads know and the belief's there and whenever you step out on the field in a World Cup game, you've got a crowd and you've got atmosphere and the whole occasion's built up.
"There's not much more to be said at that stage and if we can't get up for that game we can't get up for any game.
"The adrenaline will take over and as long as we keep our heads under pressure we'll be all right."