Here is the full list of all 50 Laser Party achievements.
Continuously survive 3 times
Continuously survive 4 times
Continuously survive 5 times
Continuously survive 6 times
Continuously survive 7 times
Continuously die 3 times
Get 1000 Points
Play With 1 Friend
Beat Boss No.0
Continuously survive 8 times
Continuously survive 9 times
Continuously survive 10 times
Continuously survive 11 times
Continuously survive 12 times
Continuously survive 13 times
Continuously survive 14 times
Continuously survive 15 times
Continuously survive 16 times
Continuously survive 17 times
Continuously survive 18 times
Continuously survive 19 times
Continuously survive 20 times
Play With 2 Friend
Play With 3 Friend
Continuously die 4 times
Continuously die 5 times
Continuously die 6 times
Continuously die 7 times
Continuously die 8 times
Continuously die 9 times
Continuously die 10 times
Continuously die 11 times
Continuously die 12 times
Continuously die 13 times
Continuously die 14 times
Continuously die 15 times
Continuously die 16 times
Continuously die 17 times
Continuously die 18 times
Continuously die 19 times
Continuously die 20 times
Get 2000 Points
Get 3000 Points
Get 4000 Points
Get 5000 Points
Get 6000 Points
Get 7000 Points
Get 8000 Points
Get 9000 Points
Get 10000 Points