Undertale. But my last Handheld device completed game is Luigi's Mansion.

Super Mario 64. I've played it to death, so I know a bunch of good shortcuts and strategies. Which is why I like to do 100% runs of the game every now and then, it's an interesting challenge.

For me it would be this really obscure game for the DS based on a now pretty much dead series called Bakugan. I unlocked everything, got all upgrades, all characters, etc.

Defender's of the Core was what it was called.

The last game I 100%ed was Skylanders Trap Team. Sounds simple, and for the most part it was, but that last trophy "Dream A Little Nightmare" was intense. Namely the last two boss battles (you have to beat the game on Nightmare difficulty).

Nextwill be...I have no idea. Maybe Flower, maybe Never Alone, maybe PickAnyOtherGameIOwn.

I am very much someone that doesn't complete a lot of games, mostly because I just get bored with a game and move on to the next or i'm just too bad.

But the last game that I really completed, man that's a really good question. Because I don't think i've ever got all achievements or trophies for ANY game, but I have 100 percent completed dbz budokai tenkaichi 1, 2 3, and budokai 1, and 3.

Well I finally got my 2nd platinum after playing Bully (or Canis Canem Edit as they felt the need to rename it outside of the US). A PS2 game ported to the PS4. Which I got since I wanted to re experience it and because I never had the time to beat it on the PS2. I played it pretty much non stop after school ever since getting it a few days ago. Yesterday I finally managed to get the Platinum. It's not really too difficult to get just a bit time consuming with some of the trophies requiring you to basically grind them out.

It's a pretty enjoyable game though if nothing else because of the funny storyline, charm and being pretty easy to pick up and play. Think maybe a more teen friendly GTA without all the swears, sex and graphic violence set in a school environment. Definitely a lot easier to get than my Bloodborne platinum which took two months of on and off playing.

Hi, the last game I have 100%'ed with Trophy's was Final Fantasy Lightning Returns on ps3 was a hard beat took me a while as most FF Games are long with tones of quests its a good feeling when you have played a game for a while (No-Cheating) it was worth the money after all ^^

The last game I 100%ed was Majora's Mask 3D, since I'm in love with this game . I will probably 100% Zelda Wii U/NX when it comes out.

I just got done playing Kirby's Nightmare in Dreamland all the way through 100%. It was kind of hard in a way, but there are some tricks to it that make the game easier. This version is a little different from the NES game Kirby's Adventure, and in some ways it is more difficult. I don't think either game is hard at all, but I haven't played them as much as I have the original Kirby's Dreamland for the Gameboy. I'm not used to playing Kirby's Adventure or Nightmare in Dreamland, but this isn't the first time I've gotten 100% I'm actually thinking of reviewing these games sometime in the near future.

A few years ago, I got 100% on all three save files of Kirby Super Star Ultra. I was pretty proud of that.
Since then, I haven't gotten completely 100% on any games, though I'm in the high 90s with a few. You know the type, the games that purposefully make it ridiculously hard to get that last 0.25%.

On a slightly different note, I'm very proud of my 100% completion of Senbonzakura Hard mode in Project Mirai DX. A particularly eventful moment for me.

   The last game I got 100% for was Batman Arkham City and that was yesterday. Took me like two weeks to get all the trophies.

I don't tend to replay games, but when I do... I 100% them... again. =P j/k In all seriousness, the last game I 100%ed (and that I want to mention) is Secret of Mana, one of my favorite games of all time. I'll never get tired of poking the Rabites.

I can't remember most of them but I'll list a few.

Final Fantasy X 
Final Fantasy 7 
Final Fantasy 9 
Crash Bandicoot 2 Cortex Strikes Back
Crash Team Racing
Bugs Bunny Lost In Time
Dragonquest 8 Journey Of The Cursed King
Abes Oddysee
Beyond Good And Evil
Kingdom Hearts 2
Time crisis 3
Timesplitters 2
Ratchet and Clank 
burnout games
need for speed underground

There are others but forgotten them when I remember I'll post them up.

The last game I did 100% on was Breath of Fire 3 I probably spent almost 1k hours into that game, as of right now I have my eyes set on final fantasy 13-2 or The witcher 3.
Though having so many different endings and possibilities in the witcher 3 I know I won't ever achieve 100% completion on it but I want to get close and the game overall is beautiful,fun and so much to do with exploring and I really like the combat for the game. I do own fallout 4 and I have been playing through it *not much of the main quest line* but just clearing every part of the map I possibly can. If you haven't played witcher 3 or fallout 4 you should really consider picking them up!

I got my 3rd platinum for Zombi on PS4, the port of Zombi U which was originally a launch title for the Wii U. I originally got it, the month it was free on PS+ though I was planning on maybe getting anyway later down the road, had I not. It was on my backlog for a while since I originally beat the game a little less than two months ago getting all the non story related trophies as well and figured I might go back to platinum it since all it required was two more runthroughs. One on the chicken mode (basically easy mode) and one on the permadeath survivor mode (dying on the other modes starts you as another survivor who can kill the zombie of the other survivor to get his/her items back).

I'd already made some progress in the chicken mode and beat that fairly easily like two days ago getting reacquainted with the game since I hadn't played it since beating it. Then yesterday I finally played through survival mode all in one day. It took me most of the day but I managed to go through it without dying at the end and got the platinum. Overall it's a pretty addicting game, more than it get credits for likely due to only being on the Wii U and because of the stupid name.

If a linear zombie survival game that's heavy on actually fighting zombies in stead of having anything like a hunger meter is your thing, then it's pretty cool. The combat isn't very complex, and the story isn't extremely interesting. The constant risk, having to conserve ammo for your weapons and simply trying to stay alive does make it pretty fun though.

I would say Witcher 3 would be next since that's what I've been playing but the platinum there is much more time consuming. Right now I'm more focused on experiencing the game before I attempt it since I'm still pretty early in the game. More likely my next attempted platinum will be Odin Sphere: Leifthrasir since I plan on picking it up a few days after it releases here in Sweden the 24th of June. I've been excited for it ever since I first heard of it earlier this year, having played the original long ago when I had a PS2, especially with all the new content they've added and the improved controls, resolution and framerate. I looked up a trophy guide for it and the platinum doesn't seem like it'll be extremely hard so probably going to attempt it getting it.

The last game I completed 100 % ( not counting the extras you would have to pay for ), was Flow Free.

It's a puzzle game for your phone. I've explained it in detail in 2 or 3 other threads, and can't bring my self to do it again lol. Sorry

I completed only the vanilla version of Skyrim and The LoZ Ocarina of time. I havent 100 percent ed to many games. I plan on doing a 100 percent walk through on The Witcher 3 next. Oh and I forgot I 100 percented Mass Effect 2 and 3. Those games were incredible.

The last game I 100% percent played oh man I haven't done that since Kirby and the amazing mirror for the game boy advanced. In order to get 100% you had to collect all the spray paint's , vanity hearts, notes and cd's, maps. I think what drove me to collect all the collectibles to obtain 100% complete was the fact that when you did a secret sub game unlocked called Boss Battle and you would just be in a arena battling bosses in a random order back to back it was cool and Kirby the amazing mirror  was one of those big open world games with lots to explore so it was fun searching and collecting the collectibles.    

I last 100%ed Roll the Ball. It's a mobile game, so it wasn't particularly difficult.....it just took a while. Hundreds of puzzles over about six months.

A few months ago I also got all the achievements for Half-Life 2:Episode One. That includes escorting all the civilians through Combine fire to get to an evac point. That gave me lots of grief but it's done!

Oh, boy.... i don't think i've EVER 100%ed a game besides one that i can think of: Frozen: Olaf's Quest, for the 3DS, is this platformer, a pretty decent one,  but i became DETERMINED to finish it, and i did, by finishing all the levels and getting all the stars. I only did one save file, but for me, that's ENOUGH! I never wanna touch that game again! Huh... i think i MIGHT'VE (I'm not 100% sure, lol) completed shaman king: Master of spirits. Awesome GBA game, 2d action platformer, you should play it if you like metroidvania-esque games. Speaking of, I also want to see if i can 100% the DS Castlevania games, Dawn of sorrow, portrait of ruin, and order of ecclesia, by collecting everything, and i'm SOOOOOOOOOOOO close to hitting that mark on LEGO Batman: The video game!!