for sniper, usually i upgrade 2 skill first, then either 3rd or first skill, depending on hero i face....
if want to harass them, then 3rd skill, if want to farm, 1st skill, but it's quite lousy at the beginning
itemwise, first i would get boots,then go for preseverance(ring first)
after tat, go for demon edge to make monkey king bar, and then eaglehorn to make butterfly, then going for power threads is optional now
after tat, get a buriza, but by this time, if u got support from teammates to take the damage from opponent, wif the 4 items stated before buriza, u can basically own people liao

moon rider if want to kill, must be really good in backstabbing, and timing when to use ur ulti
if not, u die quickly, since moonrider's life so short....
techies usually kill from smart planting of remote mines, not suiciding....
suicide might seems geng in early stages, but u are no help to ur team late game since u dun level up, and ur remotes mines dun really hurt people liao tat time if u keep suiciding early stages
razor u need to increase ur damages to high, then sneak up on the enemy, on ur frenzy, most int or agi hero usually die fast.....