And so I have caught up with the other games in Black2. Roxie was pretty difficult, considering her Pokemon were defensive and I didn't have any moves that could substantial damage, besides a 5-turn Rollout, which didn't quite happen. I survived with 5 HP and one Pokemon left. Anyway, here's the team and events
~26/1/13~
-Caught Venipede
-Named her Kaiser; I really don't remember why, but I think someone had the name Kaiser
-Did no grinding at all
-Explored the Complex
-VS Leader Roxie
--VS Koffing: Rollout(x4) w/ Kaiser
--VS Whirlipede: Return(x4) + Rollout(x3) & Pursuit w/ Geoff + Kaiser
-Obtained Toxic Badge
Team:

Geoff [SEWADDLE] Lv18 (M)
HP:46/
ATK:29/
DEF:34/
Sp.A:21/
Sp.D:29/
SPD:23
Serious Nature
@Silk Scarf
Swarm
-Tackle
-Razor Leaf
-Bug Bite
-Return

Kaiser [VENIPEDE] Lv18 (F)
HP:41/
ATK:21/
DEF:29/
Sp.A:17/
Sp.D:20/
SPD:28
Docile Nature
@None
Poison Point
-Pursuit
-Rollout
-Venoshock
-Rock Smash