Because of the Eldar's comparatively weak armour and high fielding costs but comparatively powerful weapons and fast speed, successful game play is often stylised by outnumbered Eldar units which outmanoeuvre the opponent and kill entire squads before they have a chance to retaliate. This is also the cause of Eldar game play being regarded as "unforgiving". Unlike Space Marines or Necron, who boast heavy armour, high toughness and some form of wound-resistance, the Eldar do not. Because of this lack of staying power, Eldar infantry is often subject to severe, and sometimes unrecoverable, losses after a bad tactical decision or even a series of poor rolls.