Here is the full list of all 52 .hack//G.U. Last Recode achievements.
Obtain all achievements.
Participate in 200 or more Arena matches.
View all Parody Mode content.
Complete Vol. 4 Reconnection.
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.)
Unlock all Terminal Disc files.
Complete Vol. 3 Redemption.
Open the gallery after having collected all cards in Crimson VS in Vol. 3.
Perform 10 or more Avatar Awakenings.
Complete the "Highway Master" campaign.
Perform 200 or more counterattacks.
Perform 200 or more Awakenings.
Complete Vol. 2 Reminisce.
Win 500 or more times in Crimson VS in Vol. 2 and 3.
Perform 300 or more Rengeki 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.)
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.)
Alchemize 100 or more times.
Win 100 or more times in Crimson VS in Vol. 2 and 3.
Participate in 50 or more Arena matches.
Complete the "Chase the Bounty" campaign.
Conduct 50 or more trades with allies. (Allies will still count as allies before exchanging member addresses.)
Perform 500 or more surprise attacks.
Achieve an overall A-rank area result 50 or more times.
Ride your bike for over 30 minutes.
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.)
Complete Vol. 1 Rebirth.
Perform 50 or more Awakenings.
Complete the "Stray Mecha Grunty" campaign.
Complete the "Lucky Data" campaign.
Win 500 or more battles.
Complete the "Bikman's Model" campaign.
Perform 100 or more Rengeki attacks.
Perform 50 or more counterattacks.
Defeat 5 or more PKers in the same volume.
Alchemize an item.
Perform 100 or more surprise attacks.
Complete the "Chim's Kicker" campaign.
Win 100 or more battles.
Ride your bike.
Give 30 or more gifts to allies. (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.
Conduct a trade with 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.
Achieve an overall S-rank area result.
Give a gift to an ally. (Allies will still count as allies before exchanging member addresses.)