NHL 10
40 Achievements
1,000
25-30h
No Offsides
Complete an Online Versus Play ranked match without being called for an offside
35
How to unlock the No Offsides achievement in NHL 10 - Definitive Guide
Good Luck!!
No longer possible due to server closure.
This one should come naturally while working towards the Century Play trophy. If you struggle with this one, make sure you play extra careful, and don't care to much about the outcome of the game. An offside occurs when you have a player in the offensive zone before the puck is passed over the offensive blueline.
An offside is when a player on the attacking team enters the attacking zone before the puck itself enters the zone (across the blue line). If you have the puck, just make sure none of your team mates are headed of you as you cross the blue line. If you are still not clear on offsides, check out this link. Just complete a game with no offsides and this will unlock. See 'Out of the box' on how to boost a ranked match.