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