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.
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.
Watch an engagement event.
Achieve an overall A-rank area result 50 or more times.
Participate in 200 or more Arena matches.
Perform 200 or more counterattacks.
Unlock all Terminal Disc files.
Complete Vol. 3 Redemption.
Alchemize 100 or more times.
Perform 200 or more Awakenings.
Perform 10 or more Avatar Awakenings.
Perform 500 or more surprise attacks.
Conduct 50 or more trades with allies. (Allies will still count as allies before exchanging member addresses.)
Win 1000 or more battles.
Complete Vol. 2 Reminisce.
Complete the "Highway Master" campaign.
Win 500 or more times in Crimson VS in Vol. 2 and 3.
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.)
Collect a total of 60 or more 2nd Area Words in Vol. 2 or 3. (Carrying over save data is recommended.)
Give 30 or more gifts to allies. (Allies will still count as allies before exchanging member addresses.)
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.)
Win 500 or more battles.
Perform 300 or more Rengeki attacks.
Complete the "Lucky Data" campaign.
Complete the "Stray Mecha Grunty" campaign.
Complete the "Chase the Bounty" campaign.
Collect a total of 60 or more 3rd Area Words in Vol. 1, 2, or 3. (Carrying over save data is recommended.)
Alchemize an item.
Complete the "Bikman's Model" campaign.
Perform 50 or more counterattacks.
Participate in 50 or more Arena matches.
Perform 50 or more Awakenings.
Complete Vol. 1 Rebirth.
Ride your bike for over 30 minutes.
Perform 100 or more surprise attacks.
Defeat 5 or more PKers in the same volume.
Complete the "Chim's Kicker" campaign.
Perform 100 or more Rengeki attacks.
Win 100 or more battles.
Ride your bike.
Rescue Mecha Grunty 5 or more times.
Kick or use your bike to ram a Lucky Animal 5 or more times.
Give a gift to an ally. (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.)
Speak to 10 or more PCs in the same volume.
Achieve an overall S-rank area result.
Kick or use your bike to ram 30 or more Chim Chims.