copy pasta from other thread, I's lazy
Gimps
If you grab release Ally by the edge, he jumps forward and airdodge or nairs. Either way, you can beat that by hitting him out of it or shielding and grabbing again. If you grab him before he hits the ground, he loses his jump and is forced to up+b.
If you try the standard gimp of f-throwing him off the stage, you should always run immediately off the stage and jump straight up, right before you fall off the stage. This should allow you to fair him if he just falls towards the edge, and if he uses his second jump immediately you can jump and fair chain him pretty far off the edge.
It's not too hard to get Ally off the stage and start a chain on him, but I've only been able to kill him once by doing this. I normally have a 100% success rate, so this is frustrating. I've found doing a reverse up+b to bair when he's near the edge almost works, but it also lets him DI up and towards you, giving him more height.
Your hope the entire time is to either footstool him or dair him. Your goal is to get him below you, because his options are then limited. Be careful not to footstool his up+b (he gets it back if you do).
If you spike him, he will always HAVE to up+b immediately afterwards. Always. If you can call his direction, you can spike him out of that, killing him.
If you footstool him or force him to up+b away from the stage, he'll C4.
That's your goal. Make him use his C4.
Once you know he has to use his C4, get BELOW him. He will drop his C4, and he won't detonate until he's on top of you. You have three options now:
1. Let him hit you with the C4, then nair.
This will kill him at higher %.
2. Do a rising up+b + dair through his C4, spiking him.
This will kill him at higher %.
Both are hard to land.
3. Fair him lots off the side and hope he dies
On the stage
Glide toss to grab is a combo unless he powershields or you mess up your spacing. I'm not very good at the spacing, but if you practice it you can glide toss a gyro, grab him, then throw him off the stage. This sets off some nice edgeguarding opportunities!
Glide tossing down or up is a good way to move quickly while keeping your gyro. This can be used to u-smash a lot.
Stay away from Snake as often as you can. His d-throw tech chase is ridiculous, and boarding the platforms doesn't work too well here. If he's on top of you, a mix-up of jabs, d-smash, spot dodge, roll, or even side-b for a shield poke should be used.
Your laser can blow up his grenades when he's holding them. Make sure he can't tell if you're going to laser by randomly ducking; it almost always baits the grenade throw, and you can then just shield the nade or spot dodge it.
Keep your gyro on the ground. This prevents him from walking around with immunity, and if he snake-dashes he picks up the gyro. This is good for you, because he no longer has any ground attacks worht mentioning! Once he has the gyro do not shield. This is your time to go on full out offense, because he can't do very much at all against you. If he hits you with the gyro, no big deal.
Your u-tilt is probably underused, but it is your best friend on a falling Snake. I just recently started using this, but it goes through ALL of his aerials and sets you up for more u-tilts, u-airs, and if he air dodges, a nair or bair. It can be VERY frustrating for a Snake player if you space the u-tilt to hit him with the very tip, because if you do he can't air dodge through two of them and it constantly resets itself.
Killing Snake
When Snake hits 120%, keep your gyro and laser charged whenever possible. You've played Ally enough to know he's comfortable up+bing straight up, C4ing, then up+bing again to recover high. When he does this, he's predicatable. Your laser and gyro can both kill him at this % offstage, so use those to get good KOs.
Your u-throw won't kill him, but it sets him up for dangerous aerial battles. You HAVE to be aggressive with your nairs. You aren't nairing on stage, your nairing HIGH up. Snake is at kill % starting around 70% for ROB. All you have to do is make him up+b or u-throw him high enough, then chase him with your up+b and nair him. It is dangerous, but you have the advantage.
Glide toss to up+b was originally dismissed as useless.... but against Snake, it can be a great way to catch up to him once you throw him off the stage. Practice it a bit! You can glide toss your gyro then up+b and it launches you an incredible distance forward. You still have your second jump, so fair immediately after the up+b and use your second jump to catch up with Snake. It makes edgeguarding incredibly fast if you have a gyro handy.
Gyro tricks
Other than the things mentioned above, here are a few super awesome tricks:
1. Hold down A while holding a gyro
This allows you to do your f-smash while holding a gyro. Due to f-smash's low cooldown, you can f-smash while holding a gyro, glide toss, and then f-smash or d-smash with a shield poke!
2. Z dropping gyro
Glide tossing isn't the only thing you can do. Z-drop your gyro onto Snake's shield and then fair. You'll grab the gyro again, and can throw it or z-drop and follow it up with a jab or d-smash shield poke. It's tricky, but fun.
Also, z-dropping your gyro cancels out Snake's u-tilt! This makes approaches from above a lot safer. I've been trying to find ways to z-drop and shield poke with a nair, but the spacing seems impossible. You have to be close to z-drop and far away to nair shield poke, and it gives Snake too much time to react. :[
