Here is the full list of all 39 Press Forward OOOOONNNNN achievements.
Destroy 50 fans in one game
Destroy 30 red balls in one game
Get to Stage 11
Get to Stage 20
Get to Stage 25
Get to Stage 30
Shoot 12 Rushing Birds within 3s (3APs)
Shoot 50 Rushing Birds within 6s (8APs)
Shoot 180 Rushing Birds within 10s (20APs)
Destroy at least 50 enemies within 3s by Lightning Bird (3APs)
Destroy at least 120 enemies within 3s by Lightning Bird (7APs)
Destroy at least 250 enemies within 3s by Lightning Bird (15APs)
Up to Lv.5 (2APs)
Up to Lv.8 (4APs)
Up to Lv.10 (6APs)
Being stunned for not more than 4 times until Stage 10 (2APs)
Being stunned for not more than 6 times until Stage 16 (10APs)
Being stunned for not more than 10 times until Stage 28 (25APs)
Being stunned for not more than 13 times until Stage 45 (50APs)
Get to Stage 40 (12APs)
Get to Stage 55 (20APs)
Using Flash for not more than 15 times until Stage 10 (2APs)
Using Flash for not more than 25 times until Stage 25 (6APs)
Using Flash for not more than 35 times until Stage 45 (15APs)
Take not more than 4 minutes to get to Stage 10 (2APs)
Take not more than 7 minutes to get to Stage 20 (8APs)
Take not more than 9 minutes to get to Stage 30 (20APs)
Take not more than 11 minutes to get to Stage 45 (30APs)
Total Enemies Killed reaches 200 (1APs)
Total Enemies Killed reaches 600 (4APs)
Total Enemies Killed reaches 1500 (10APs)
Total Enemies Killed reaches 4000 (20APs)
HP lost from using Ult in one game reaches 3000 (10APs)
HP lost from using Ult in one game reaches 10000 (20APs)
HP lost from using Ult in one game reaches 88888 (35APs)
Enemies Killed by Pushing reaches 50 (2APs)
Enemies Killed by Pushing reaches 200 (5APs)
Enemies Killed by Pushing reaches 600 (15APs)
Enemies Killed by Pushing reaches 2500 (30APs)