I'll see if I can do animations for that. Apart from them usually taking longer, I've got my own game and life to design (as poetic as that sounds). X)
Here is an idea! instead of climbing why not remake tower?
like when "soldier guy" is overlapping door to tower and player
press "space" for example, then player gets control over tower gun.
When pressing "space" again then he comes out of tower.
like this
here is a fancy dropship for no extra charge! maybe you can use it somehow