The mech feels floaty and not as tough as you think (enemy bullets especially, can kill it quickly if you do not dodge quickly enough). Gamepad is somewhat supported (for movement) but with the controls locked (no custom binds I found), you are stuck with your WASD and mouse controls.

Some questionable design issues:

(W) key isn't used for jumping, so why not move the collect function (E) onto (W)? Likewise, the return function (R) could have been bound to {Q} for a smaller control "area".

Resources are not labeled (no help offered on which map type to find them initially). And the COLLECTION bounties do not make it clear that you lose those resources in exchange for the reward.

Enemy mooks are easy to deal with (unless they shoot back en-masse, like the bandits), even with the mech's default cannons (which have a small AOE at the point of impact that penetrates hard cover). However, the bosses are tough, and except for the bandit boss, can only melee your mech. However, the vault boss can climb up sheer walls to keep closing in on you.

It would have been nice if the enemies offered a small drop chance of resources (and for the bosses, a bundle of resources, or the rare vault core resource), because with the exception of fulfilling your bounty kills, there is no reason to go out of your way to seek & destroy enemies.

The grind is endless, but otherwise, worth the $2. At least it's not Titanfall 2.