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