Here is a chance for me to get more in depth with Luigi’s recovery, here it goes:
Down B / Tornado
If Luigi hasn’t used all his jumps, then he is likely to use Down B as a recovery. There are lots of advantages in recovering this way:
• Invulnerability to edgehog;
• Characters without disjointed hitboxes may experiences difficulties hitting through the tornado’s hitbox (not our case);
• The tornado rises pretty fast, cancels earlier in the air and he doesn’t go into helpless state (being capable of performing two aerials on the way down);
• He doesn’t have to risk recovering at the ledge (where his short range ledgehopped aerials have little effect on characters with disjointed hitboxes).
You still can punish through conventional Eruption, but by doing so you are getting in range for being hit by the tornado ascendance. And considering you’ll need 30 frames perform an Eruption uncharged, it is quite possible you won’t make it in time. So prioritize aerials if you predict this recovery, this is a good opportunity for landing that Bair/Uair you’ve kept fresh.
Side B / Green Missile
This move is totally essential for Luigi’s recovery, and you’ll be dealing with it a lot. He’ll always use it after being sent too far from the stage as it has the most horizontal movement of any of his recovery moves. However, this move has a long duration, leaving Luigi very vulnerable. It does sweetspot the ledge, but Ike could hit him with Eruption before he does that. So he might use it to approach just enough for using His Down B or Up B recovery, if he approaches too much though, he would be susceptible to a walk-off Fair. So watch out if he is recovering too low. Also, there is a chance that Luigi will get his head stuck in the stage while using his Side B, take this opportunity and Dair him!
Warning: There is a chance that this move will misfire, making Luigi fly faster and farther than normal in a more accentuated arc. This move can potentially kill you in one unexpected hit! Try not to position yourself in his upper diagonal while he is charging the missile.
Up B / Super Jump Punch
The most conventional approach for sweetspoting the ledge. I’ve never been able to punish this recovery with Eruption, maybe because he is able to sweetspot the ledge before he gets inside the Eruption hitbox when recovering at a low angle. But then, conventional recoveries requires conventional gimps, just edgehog him.