on roll out (set up) use the Erika affect so once you set up your tele's you can tp back to spawn and the tps only cost 100 metal to upgrade.

still on roll out, switch to jag and build a dispenser and upgrade it to at least level 2, by then your tp should be done and you can build a sentry shortly after.

kills on your sentry gun? not using the frontier justice while it has kills? switch to it! you get free crits for it.

don't. use. the. pomson. (unless Ur silly)

use call outs, sure some people ignore chat, but just saying "spy spawn" can help out not only you but Ur team :D

don't hog your dispenser, it needs to be in a place people (your team) can see and retreat to.

don't build on last if everyone is up front, your wasting everyones time (unless there is an annoying scout/demo running to spawn and destroying tps)

watch uncle Dane :]

remember, the rescue ranger can grab buildings from afar, also remember you need at least 100 metal to do so.

use short circuit wisely, its not a get out of soldier shooting at me with his rocket launcher card.

you can also use the short circuit as a flash bang when approaching those snipers who feel like not switching to smg. (the losers)

dont always play engi, its okay to play something else :3