The "Avalanche" Up2 has the same look of the "Avalanche" and the Up1 version. It has a 2x zoom scope which lets you to use like a machine gun. Its reload tank is at the bottom of the gun (before 9.2.3 update, it didn't have a scope so the reload tank is on above).
It shoots snowballs as fast as a machine gun, so hold the fire button, head-shot wise, until you have finished killing your current opponent.
It also takes time for snowballs to travel, so it's best used in close to medium range.
Don't stop dodging and jumping at the same time when facing an opponent. Even against opponents who wield weapons that aren't really suitable against you, jumping and dodging.
Use a melee weapon and attack your enemy while he/she is reloading or from behind.
Pick off its users from long ranges.
None (Final upgrade)
It is a Heavy weapon that looks like a Primary defying it's appearance and stats.
Before the 9.2.0 update, it looked like a snowball bazooka. After the 9.2.0 update, it looked like a primary weapon.
For a short time, this weapon could be bought via killcam for 140 .