Okay, most of this is ganked from Ardemesa’s excellent FAQ on Limbo Stun at :
http://db.gamefaqs.com/console/xbox/file/dead_or_alive_3_limbo_stun_combo.txt
But aside from simply describing how and what moves cause limbo stun, I’m just gonna list the combos, you can check out the FAQ to understand the particulars of how these work ( basically, LS is just an inescapable stun that certain characters’ moves cause ).
Ayane-
b+K+Free (LS), u+K (launch), PP f+PP [77]
b+K+Free (LS), u+K (launch), PP f+KK [77]
b+K+Free (LS), u+K (launch), PP f+P, u/b+K [85]
(back turned)
b+K+Free (LS), b+P (launch), PP D+PK [74]
b+K+Free (LS), b+P (launch), PP f+P.K [78]
b+K+Free (LS), b+P (launch), PP f+P, d+K [78]
b+K+Free (LS), b+P (launch), PP f+P, Free, u/b+K [83]
b+K+Free (LS), b+P (launch), b+PPP, d+P [72+10]
b+K+Free (LS), b+P (launch), b+PP u/b+K [75]
b+K+Free (LS), b+P (launch), PP b+PP u/b+K [80]
b+K+Free (LS), b+P (launch), PP b+PPP, d+P [75+10]
Bass:
f+P (LS), d/f+P, d/f d/f+P (launch), PPP, d+K [91+12]
-
f+P (LS), d/f+P, d/f d/f+P (launch), P+K, f+KP, d+K [103+12]
-
f+P (LS), u+K (launch), P+K f+KP, d+K [89+12]
-
f+P (LS), u+K (launch), u/f+PK, P+Free, P+Free [98]
-
f+P (LS), u+K (launch), u/f+PKP, d+K [90+12]
Bayman:
-
K+Free (LS), PP Free, PP, b+P+K (launch), f+KP, P f+PK [101]
-
K+Free (LS), PP Free, PP, b+P+K (launch), f+KP, P f+P d+K, d+K [96+15]
-
K+Free (LS), PP Free, PP, b+P+K (launch), f+KP, KP, d+K [97+15]
-
K+Free (LS), PP Free, PP, b+P+K (launch), f+KP, f+PPK, d+K [99+15]
-
K+Free (LS), PP Free, PP, b+P+K (launch), f+KP, PKK, d+K [101+15]
Brad Wong:
dd+P (LS), d/f+KPP (launch), d/b+P, K, d+P. 100 damage (88+12). HARD!
Christie:
d/f+K+Free (LS), P, f+P+K (LS), b+K+Free (launch), P+K, f+PPP [89]
- d/f+K+Free (LS), P, f+P+K (LS), b+K+Free (launch), P+K, PP D+KK [90]
d/f+K+Free (LS), PP Free, P, b+K+Free (launch), P+K, f+PPP [89]
- d/f+K+Free (LS), PP Free, P, b+K+Free (launch), P+K, PP D+KK [90]
Helena:
f+P Free (LS), u/f~P, P, P+K (launch), PPP [80]
-
f+P Free (LS), u/f~P, P, P+K (launch), f+KK [80]
-
f+P Free (LS), u/f~P, P, P+K (launch), b+KK [80]
-
f+P Free (LS), u/f~P, P, P+K (launch), u/f+PK [81]
-
f+P Free (LS), u/f~P, P, P+K (launch), PPK [83]
Jann Lee: ( must be from counter blow )
-
K+Free Free (LS), d/f+P, u/f+K (launch), PP f+P, PPP d+K [103]
-
K+Free Free (LS), d/f+P, u/f+K (launch), PP f+P, PP D+KK [104]
-
K+Free Free (LS), u/f+P, u/b+K (launch), PP f+P, PP D+KK [103]
-
K+Free Free (LS), u/f+P, u/b+K (launch), PP f+P, f+K b+K [104]
-
K+Free Free (LS), u/f+P, u/b+K (launch), PP f+P, P d+PK [104]
Zack ( and seeing as how he has 6 DIFFERENT WAYS to get LS out of a character I don’t see how he’s bottom tier, but that’s just me ):
(Closed stance, normal or hi counter blow. Damage rating assumes normal):
-
d+KPPK (LS), ff+K (launch), b+PP, d+K [82+10]
-
d+KPPK (LS), ff+K (launch), PPPK [93]
-
d+KPPK (LS), ff+K (launch), u/b+KK [93]
-
d+KPPK (LS), ff+K (launch), f+K, f+PP, d+K [92+10]
-
d+KPPK (LS), ff+K (launch), u/f+K, f+KK, d+K [93+10]
Those should get you started, there’s a lot more combos in the FAQ, go check 'em out, and yeah, definitely check out doacentral.com, they’ve got all the technical data, tag combos, you name it.