Get British Bulldog:
In career mode pick Dynamite Kid and finish career mode to get British Bulldog in the shop
Get John Studd:
In career mode pick any wrestler and Beat John Studd to unlock him in the shop

Get Owen Hart:
In career mode pick Bret Hart and finish career mode to unlock Owen in the shop

Get Bruno Samartino:
In career mode pick Hulk Hogan and finish career mode to unlock Bruno in the shop

Get Andy Kaufman:
In career mode pick Jerry Lawler and defeat Andy Kaufman to unlock Andy in the shop

Get Unlimited Green Coins:
Finish career mode using all wrestlers