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