Weasel appears in all missions of easy difficulty. He is not encountered in other difficulties.
Weasel's skill type is easy. He is 0% accurate when firing, has a reaction time of 0.5 seconds, and cannot detect footsteps. When facing an enemy target, he will hold fire for 1.5 seconds. He uses a Schmidt Scout for medium and long range and uses a Glock for close range combat.
Weasel buys a Schmidt Scout when his money is greater than $2750. If unaffordable, he will buy a random weapon depending on the amount of money he has. He prefers to use a Glock rather than buying or using other pistols and he does not use grenades. He attaches the silencer if he uses the M4A1 or/and the USP.
Weasel is a member of the Sweden Arctic Avengers.