JOIN TERRORIST TEAM! 

settings:
 
mp_freezetime 0 
//then mp_restartgame 1 

You can easily get the shrapnelproof and defuse this achievements on this map. 
First, take 80hp damage from the 2 BOTs' grenades, and wait untill roundend, don't kill them. You get shrapnelproof. 
Second, plant the bomb on the B sign, then crouch on the PINK square, and with grenade aim to the other PINK square (like on the picture) and throw them untill you kill the BOTs while defusing. You get defuse this. 

Map by Balzs