Here is the full list of all 50 Resident Evil Revelations achievements. It takes around 50-60 hours to unlock all of the achievements on Windows.
【CAMPAIGN】Defeat a Scarmiglione as a whole without killing both parts of its body separately.
【CAMPAIGN】Clear Episodes 4 - 6.
【CAMPAIGN】Defeat 10 Oozes with headshots.
【RAID MODE】Clear a stage at 5 levels lower than the recommended level.
【CAMPAIGN】Defeat Rachael before she gets to the cafeteria.
【CAMPAIGN】Clear Episodes 1 - 3.
【CAMPAIGN】Defeat 150 enemies.
【CAMPAIGN】Scan 1 hidden hand print.
【CAMPAIGN】Scan an enemy for the first time.
【CAMPAIGN】Clear Episodes 7 - 9.
【CAMPAIGN】Clear Episodes 10 - 12.
【CAMPAIGN】Clear Casual difficulty or higher.
【CAMPAIGN】Clear Normal difficulty or higher.
【CAMPAIGN】Clear Infernal difficulty.
【CAMPAIGN】Clear the game in Normal difficulty or above without dying once.
【CAMPAIGN】Scan 15 hidden hand prints.
【CAMPAIGN】Scan 30 hidden hand prints.
【CAMPAIGN】Scan all enemy types.
【CAMPAIGN】Stop an enemy bullet with your knife.
【CAMPAIGN】Evade a Scagdead's instant-death attack.
【CAMPAIGN】Defeat 3 enemies with one shock grenade.
【CAMPAIGN】Defeat a Malacoda without using a rocket launcher.
【CAMPAIGN】Swim in the Solarium.
【CAMPAIGN】Dodge 20 times.
【CAMPAIGN】Land 10 fully charged physical attacks.
【RAID MODE】Clear all stages in Raid mode on Chasm.
【RAID MODE】Clear all stages in Raid mode on Trench.
【RAID MODE】Clear all stages in Raid mode on Abyss.
【RAID MODE】Clear all stages in Raid mode on Chasm with an S rank.
【RAID MODE】Clear all stages in Raid mode on Trench with an S rank.
【RAID MODE】Clear all stages in Raid mode on Abyss with an S rank.
【RAID MODE】Clear the bonus stage, The Ghost Ship.
【RAID MODE】Reach player level 5.
【RAID MODE】Reach player level 10.
【RAID MODE】Reach player level 20.
【RAID MODE】Reach player level 30.
【RAID MODE】Reach player level 40.
【RAID MODE】Reach player level 50.
【RAID MODE】Defeat 10,000 enemies.
【RAID MODE】Inflict 100,000 points of damage to an enemy in one hit.
【RAID MODE】Land a fully charged physical attack on an enemy at the same time as your partner.
【RAID MODE】Obtain a super rare weapon.
【RAID MODE】Obtain all super rare weapons.
【RAID MODE】Spend 1,000,000 BP in the store.
【RAID MODE】Acquire No Damage Bonus for the first time.
【RAID MODE】Acquire Trinity Bonus for the first time.
【RAID MODE】Acquire 10 bonuses.
【RAID MODE】Acquire 50 bonuses.
【RAID MODE】Acquire 100 bonuses.
【RAID MODE】Acquire 150 bonuses.