There should ha bullets that have an effect like the splash damage from the rocket launcher. But poisoning a block or putting an expolsive on a blockafter a shot for a bigger explosion.
The difficulty is good enough but i forgot to check my health just once in wave 39, when i died i had to start over. Better start from the beginning of wave 39 or make a checkpoint once every 5 waves.
MaTTyTL: To unlock the razor queen you gotta encoutered all gloople kinds, she only appears at the end of a nest, so your best bet is to play alot of small nests, you have to slash her 5 times before she dies(hit her just after she lunged at you), watch out for siege mode(you'll know what i mean when it happens, if you kill her you get the sword, kill her a second time to have the (probably) last badge. Good Luck Mate.
The 1st method ScrappyTank says can also be done easier: walk in its line of sight, when it starts charging its beam, rush towards it and than whoop his ass before he FIRES MAH LAZOOOOOR.
Try to make a hummer rocket.
1) Max out everything related to hull strength
2) As much trust as you can get
3) DO NOT buy anything related to less fuel consumption
4) DO NOT buy wings for agility
5) And NO air resistance decrease
Voila you got yourself a tricky to steer son of a b*tch, that costs you more then just a good space shuttle and it sucks.
KingZipar4 you should know that travelling at the light speeds would stop time completly for the people in that spacecraft or what ever. So if one should find a way to fly at warp het will get younger.