榴彈槍
榴彈槍（英語：Grenade）／火箭（英語：Rocket）是一把全自動拋射武器（按住開火鍵即可連續不斷地發射拋射物）， 持榴彈槍開火時會發射一枚水平與垂直速度極高的榴彈。
發射出去的榴彈會做出類似拋物線形狀的弧線運動軌跡，當觸碰到其他玩家身上或可碰撞實體時會爆炸（註：榴彈會穿過發射者本身）。任何靠近爆炸中心的玩家都會被衝擊力給推開，因此榴彈槍允許玩家獲得大量的移動速度。
水平移動
如何利用榴彈獲得水平移動速度：
- 首先進行正常的水平移動；
- 之後向移動方向相反方向的地面上發射榴彈。
每次爆炸都會將玩家向前推動一些，也就是說只要玩家重複發射榴彈，就可以持續不斷地獲得水平移動速度。
一次爆炸不一定會將玩家推向很遠的地方，玩家可以嘗試將榴彈與其他技巧相結合，從而達到更遠的距離，例如：
- 首先向正上方發射一枚榴彈；
- 在第一枚榴彈落地的瞬間，向移動方向相反的地面上發射第二枚榴彈（此時兩枚榴彈應幾乎在同一位置一同爆炸），之後持續不斷的發射榴彈以獲得更快的速度；
- 在發射第二枚榴彈之前，玩家可以嘗試使用其他方法先獲得一定的水平移動速度（例如使用鈎索）;
- 在發射最後一枚榴彈時做榴彈跳。
榴彈跳
榴彈跳是一種能夠讓你跳的更高的榴彈槍技巧。
僅垂直向下發射榴彈時，玩家最高可以被推到4.25格的高度。
如何進行榴彈跳：
- 瞄準正下方；
- 跳躍，之後發射榴彈。
跳躍與發射榴彈之間的時間間隔應該非常小（但不應同時），以達到最佳的加速效果：
- 如果發射時機晚了，玩家不會得到很高的垂直速度；
- 如果發射時機早了，則會導致玩家發射榴彈後已位於空中，此時再進行跳躍會消耗二段跳躍，因此會重置玩家的垂直移動速度。
利用牆體
跟使用榴彈進行水平移動大同小異。玩家可以利用榴彈和牆體將自己推向高處的平台或地面上：
- 緊貼牆體；
- 做一次榴彈跳；
- 榴彈跳成功後，將光標瞄準至向下且偏向牆體的方向（大約45度）；
- 連續發射榴彈，同時要做到時刻緊貼牆體。
Once you run out of upwards momentum:
- Continue shooting till you will begin falling
- Double jump, directly followed by another shot
- Continuously shoot again, while still staying next to the wall by moving in its direction
On some parts you will need to switch to the opposite wall while on the way up.
- If the wall is close, you can switch to it without interrupting the rhythm.
- If the wall is further away, you can propel yourself to it using a rocket and then use the double jump to continue upwards.
Double Rocket Jump
The double rocket jump (aka 『double rocket』) is a more advanced version of the rocket jump.
It works by having 2 simultaneous rocket explosions (instead of just one) below you right after your jump.
- Shoot on rocket straight up
- Wait until it explodes below you
- Do a regular rocket jump
It didn’t work?
- If the two explosion didn’t happen simultaneous, try to adjust your timing with the rocket jump.
- If you still didn’t get very high or lost your double jump, try to jump a little earlier
This trick is hard to pull off consistently.
Triple Rocket Jump
Triple rocket jumping is much harder than the double rocket jump.
- Start by doing a double rocket jump
- While falling down again, fire 2 rockets straight up (hold the firing key, the second rocket should be shot about when you land)
- If timed correctly, the 2 rockets will explode at the same time below you
- Couple the 2 rockets with a regular rocket jump for the triple rocket jump
Due to the precise timings, triple rocket jumps are insanely hard to pull off consistently.
Advanced Behavior
- A grenade projectile will explode if it remains in the air for too long [exact time?]
- A rocket projectile has no width, meaning it can technically pass through tight gaps between blocks. To get it to work on purpose, keep in mind that it is easier the closer you are to the gap
- Since the grenade launcher is an automatic weapon it can be held down to shoot indefinitely, also directly on unfreeze, even if you are standing in a freeze tile
- If you kill while a grenade projectile is in the air, the projectile will disappear