just use the usual... FH 3 tc boom, forward base, attack with atleast 20 axeman, 10 spearmen, 3 mu's, 2 seige towers at 14 min mark or earlier, raid a bit, guard tc's, get ready to incorporate elephants to your strat, get trade route, use prosperity while advancing to class with atleast 25 vils, hunt with hunting dogs, build priests while advancing and have atleast 5 guys by 6-7 min to stop raid, farm late, get techs when needed.
WHAT COULD GO WRONG???
What I mean to say is not to worry to much. Is tundra the one with a few cliffs and the dead- looking trees?