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