Here is the full list of all 18 ClusterPuck 99 achievements.
Rack up 1000 lifetime Checks
Rack up 500 lifetime Deaths
Rack up 1 hour of Hold Time
Rack up 100 lifetime Goals
Obtain Roughhouser medal 25 times
Obtain Shotblocker medal 25 times
Obtain the Untouchable medal 25 times
Rack up 10 lifetime Oopsies
You patiently waited over 300 days for this update
Complete the ClusterPuck 99 Challenge Mode
Defeat and Unlock 49th Street
Achieve a Gold Medal on the Goalie Practice Challenge
Achieve a Gold Medal on the Target Practice Challenge
Score 3 goals in one match
Complete a 10 minute match on any level
Disrespect an opponent after a Slam Dunk
Win a Minefield match without dying