Some of your math isn't adding up for me. It is 75 for a Tiger Shape shifter, but you spent 210BP on attributes (20 on BOD, 20 on AGI, 40 on REA, 10 on STR, 0 on CHA, 10 on INT, 10 on LOG, 30 on WIL, 30 on Edge, and 40 on Magic for a total of 210BP spent).
I'd also second anotherJack... currently your character has one Charisma and no social skills. Mechanically this means that anyone can con you, persuade you, intimidate you, or impress you, and you won't even put up a challenge (Defaulting causes -1 dice... and you only have 1 charisma). In addition to this, Shape shifters are supposed to be more susceptible to aggression than your typical metahuman. For the Triads, I'd suggest Etiquette, as they're big on the rituals.
I'd also agree that Erased isn't particularly appropriate. If you've got a Matrix specialist in your group, you can have him preform such actions in game, but (and especially if he's doing it for more than one person) it takes as much (if not more) time as it does skill. The Erased quality implies you have an NPC who actively moves through the Matrix to clear your records; this doesn't fit particularly well, as fleeing the Triads caused you to lose contact with those familiar with you, and your lack of social skill would prevent you from befriending an elite hacker (and since you've got no technical ability, I'm going to say an AI was impossible).
Also, the Vendetta quality also dictates that you have an Enemy quality:
The character must also take the Enemy quality (with an Incidence rating of at least 4).
Going by your background, the Triads that held you captive were wiped out, so unless you had a lasting record for capture (unlikely due to the Erased you took as well), it would be difficult for them to track you.
If you plan on going through with this character, take it with a grain of salt... you're heavily combat focused, with no social ability, and you're unable to default on social skills. This means you fall back, literally, into the role of muscle support. My suggestions would be to move something and have charisma up by 1 more (if only so that you have a single die to roll), as even with four edge, taking Long Shots on social tests wouldn't be much help. While I like the background, I find it unlikely that you'd be taught how to use a gun before you were taught how to respect others and be humble, as well.
EDIT: A few typos I just caught.