Here is the full list of all 52 .hack//G.U. Last Recode achievements.
Obtain all achievements.
View all Parody Mode content.
Complete Vol. 4 Reconnection.
Conduct 50 or more trades with allies. (Allies will still count as allies before exchanging member addresses.)
Watch an engagement event.
Reach guild rank 9 by raising all books in the Book of 1000 to rank 9 in Vol. 3 after having carried over your save data from Vol. 1 and 2.
Raise Haseo to level 150 in Vol. 3 or Vol. 4. (Using Cheat Mode does not count.)
Open the gallery after having collected all cards in Crimson VS in Vol. 3.
Unlock all Terminal Disc files.
Complete Vol. 3 Redemption.
Perform 200 or more counterattacks.
Perform 10 or more Avatar Awakenings.
Achieve an overall A-rank area result 50 or more times.
Finish first on any course in the "Highway Master" campaign. (After obtaining the 1st Word "Passing" in Vol. 2, you can attempt Bike Missions before beginning the campaign in Vol. 3.)
Win 500 or more times in Crimson VS in Vol. 2 and 3.
Perform 50 or more counterattacks.
Complete Vol. 2 Reminisce.
Win 1000 or more battles.
Perform 300 or more Rengeki attacks.
Perform 200 or more Awakenings.
Alchemize 100 or more times.
Perform 500 or more surprise attacks.
Win 100 or more times in Crimson VS in Vol. 2 and 3.
Complete the "Highway Master" campaign.
Perform 50 or more Awakenings.
Collect a total of 60 or more 2nd Area Words in Vol. 2 or 3. (Carrying over save data is recommended.)
Collect a total of 60 or more 1st Area Words in Vol. 1, 2, or 3. (Carrying over save data is recommended.)
Collect a total of 60 or more 3rd Area Words in Vol. 1, 2, or 3. (Carrying over save data is recommended.)
Participate in 200 or more Arena matches.
Perform 100 or more Rengeki attacks.
Complete the "Bikman's Model" campaign.
Complete the "Chase the Bounty" campaign.
Participate in 50 or more Arena matches.
Complete the "Lucky Data" campaign.
Complete Vol. 1 Rebirth.
Win 500 or more battles.
Complete the "Stray Mecha Grunty" campaign.
Ride your bike for over 30 minutes.
Complete the "Chim's Kicker" campaign.
Defeat 5 or more PKers in the same volume.
Give 30 or more gifts to allies. (Allies will still count as allies before exchanging member addresses.)
Conduct a trade with an ally. (Allies will still count as allies before exchanging member addresses.)
Perform 100 or more surprise attacks.
Give a gift to an ally. (Allies will still count as allies before exchanging member addresses.)
Rescue Mecha Grunty 5 or more times.
Kick or use your bike to ram a Lucky Animal 5 or more times.
Win 100 or more battles.
Ride your bike.
Alchemize an item.
Achieve an overall S-rank area result.
Kick or use your bike to ram 30 or more Chim Chims.
Speak to 10 or more PCs in the same volume.