Here is the full list of all 34 Hyper Sentinel achievements.
Complete level 1A in Arcade
Complete any medal on any level
Complete levels 1B - 2C in Arcade
Complete levels 3A - 3C in Arcade
Complete levels 4A - 5A in Arcade
Complete all levels in Arcade
Complete level 1A in Boss Run
Complete levels 1B - 2C in Boss Run
Complete levels 3A - 3C in Boss Run
Complete levels 4A - 5A in Boss Run
Complete all levels in Boss Run
Survive for 1:00 in Survival Mode on any level
Survive for 2:30 in Survival Mode on all levels
Complete all Medals on level 1A
Complete all Medals on level 1B
Complete all Medals on level 1C
Complete all Medals on level 2A
Complete all Medals on level 2B
Complete all Medals on level 2C
Complete all Medals on level 3A
Complete all Medals on level 3B
Complete all Medals on level 3C
Complete all Medals on level 4A
Complete all Medals on level 4B
Complete all Medals on level 5A
Complete all Medals in the game
Complete all levels in all modes on Normal difficulty
Complete all levels in all modes on Hard difficulty
Complete all levels in all modes on Retro difficulty
Complete the game 100%
Score 48,000 on any level in Arcade
Survive for 4:00 in Survival mode on any level
Score 64,000 on any level in Boss Run
Get a hi score of 350,000 or more