Okay, let's think. This does in fact appear to be Actual 40k, but we'll disregard that since we don't know it in-character. What do we know, and how does it affect each choice?
[ ] Push to do as best as he possibly can
This gets us noticed immediately. Our constitution is good and we probably have a bit of a physical advantage at the moment given everyone will be suffering the effect of the translator, so we are likely to wind up standing out. It will make us a target for any of our rivals, especially any young masters if they see us being praised over them. The Celestials are not nice people who will pat us on the head for doing a good job, but they probably respect strength (everyone respects strength). We will not, however, be strong enough to earn actual respect, because they're still far stronger - at best we will be seen as somewhat more valuable meat. Risky, but with potential for high reward if someone sees something worth cultivating (hah) in us.
[ ] Don't stand out one way or the other, just do a good job
This is what you might call the hedging-bets option. It means we don't get any special notice or rewards, but also we don't get any particular punishment or targeting either. We can assess the situation and try to pull ahead later. It's giving up on the opportunity to pull ahead of the pack early - and that is a sacrifice - but it buys us a bit of time to gather information and let some of the dumber young masters get themselves killed, which actually might be valuable enough to sacrifice that lead. Not a bad choice.
[ ] Sandbag a bit, be underestimated
I cannot begin to overstate what a bad idea this is. Weakness will make us a target; it won't lead to people overlooking us, it'll lead to us being seen as more disposable and easier for angry young masters to take out their frustration on. Either we'll have to drop the act as soon as someone decides to pick on us, or resign ourselves to being a punching bag. This is probably the worst option of the lot.
[ ] Hang back to help those struggling
This... is the complete wildcard. I will say right now that I do not consider this a good choice. We've seen how much value these Celestials place on a) mortals and b) our batch of new recruits: none. Yes, they let us check the first few into the machines, but that was just not caring enough to stop us; if we're sacrificing performance to extend the hand of charity, they may well not be so forgiving. Furthermore, we cannot in fact be friends with everyone and being nice and good and generous won't win us any prizes; the only gratitude we'll get by doing this will be from those struggling, e.g. the weak ones who won't be able to help us much. But... it's nonetheless plausible that this might be taken as a sign of the positive kind of caution and conserving resources. I still think it's a bad play, but there's justification to at least build an argument that it's worth considering.
That said, I don't think it's a strong argument. So I'm going to go with what I consider the safest option in a completely new environment full of unknown threats and stick to the herd until we know more. Information is an advantage, and without it, sticking out only exposes you to more threats - at least among a crowd, you have some safety in numbers.
[X] Don't stand out one way or the other, just do a good job